I have been a long time reader for the forum and have learnt a lot. It's finally time for me to post my portfolio. I am stuck at cross roads in life and I want to make sure I am making the right choice financially and otherwise. I have been very candid about my situation - hope its not TMI.
Apologies for the long post! Appreciate your advice
NH
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Emergency funds: Have cash to cover 3-6 months (see portfolio below)
Debt: $0 (carry some small CC balances <$1000, pay off every 2 weeks)
Car: Early 2000s Beige Toyota Camry with 130K miles

Tax Filing Status: Single
Tax Rate: 24% Federal, 6% State (not sure how to estimate, my effective tax rate based on my returns for 2020 seems lower)
State of Residence: Vermont
Age: 34
Salary pre-tax incl bonus: ~135K/yr
Rent incl utilities: ~$1275/month
Total Annual Expenses (incl. Rent): ~35K (~$2.5-3K/month)
Desired Asset allocation: 75-85% stocks / 25-15% bonds
Desired International allocation: 20-25% of stocks
Total portfolio/Net Worth : ~$700K
Cash Assets: ~$200K
Cash (Emergency): $15K (3-6 months)
Cash (Ally): $180K
Cash (HSA): $5K
Investment Assets: ~$500K
Taxable (Fidelity)
NTSX WISDOMTREE TR 90/60 BALNCED FD (Exp Ratio:0.20%) 2%
Taxable (Vangaurd)
VIGAX Vanguard Growth Index Fd Admiral Shs (Exp Ratio:0.05%) 8%
VTIAX Vanguard Total International Stock Index Fd Admiral (Exp Ratio:0.11%) 10%
VTSAX Vanguard Total Stock Market Index Fd Admiral Shs (Exp Ratio:0.04%) 17%
VMFXX Vanguard Money Market Reserves Inc Federal Money Market Fund (Exp Ratio:0.11%) 0%
401k (Fidelity)
VWNAX VANG WINDSOR II ADM (Exp Ratio:0.26%) 5%
DFSVX DFA US SM CAP VALUE (Exp Ratio:0.49%) 7%
FXNAX FID US BOND IDX (Exp Ratio:0.03%) 9%
FXAIX FID 500 INDEX (Exp Ratio:0.02%) 7%
FSMAX FID EXTD MKT IDX (Exp Ratio:0.04%) 7%
FTIHX FID TOTAL INTL IDX (Exp Ratio:0.06%) 5%
31617E836 FID GROWTH CO POOL (Exp Ratio:0.43%) 7%
6% Employer Match
ROTH IRA (Fidelity)
FSKAX FIDELITY TOTAL MARKET INDEX FUND (Exp Ratio:0.015%) 15%
HSA (Fidelity)
FSKAX FIDELITY TOTAL MARKET INDEX FUND (Exp Ratio:0.015%) 3%
Contributions
Annual Contributions
$19,500 401k (6% Employer Match) - Max out (~16% of paycheck)
VWNAX VANG WINDSOR II ADM (Exp Ratio:0.26%) 10%
DFSVX DFA US SM CAP VALUE (Exp Ratio:0.49%) 15%
FXNAX FID US BOND IDX (Exp Ratio:0.03%) 20%
FXAIX FID 500 INDEX (Exp Ratio:0.02%) 15%
FSMAX FID EXTD MKT IDX (Exp Ratio:0.04%) 15%
FTIHX FID TOTAL INTL IDX (Exp Ratio:0.06%) 10%
31617E836 FID GROWTH CO POOL (Exp Ratio:0.43%) 15%
$6000 Roth IRA - max out
$3600 HSA ($1000 payed by employer) - max out
$18,000 taxable ($1500 per month)
VIGAX Vanguard Growth Index Fd Admiral Shs (Exp Ratio:0.05%) 20%
VTIAX Vanguard Total International Stock Index Fd Admiral (Exp Ratio:0.11%) 20%
VTSAX Vanguard Total Stock Market Index Fd Admiral Shs (Exp Ratio:0.04%) 60%
Available funds
Funds available in 401(k)
Fidelity® Growth Company Commingled Pool (Exp Ratio:0.43%)
William Blair Small Mid Cap Growth CIT (Exp Ratio:0.9%)
Fidelity® Extended Market Index Fund (FSMAX) (Exp Ratio:0.036%)
Fidelity® 500 Index Fund (FXAIX) (Exp Ratio:0.015%)
Vanguard Windsor™ II Fund Admiral™ Shares (VWNAX) (Exp Ratio:0.26%)
Vanguard Target Retirement 2065 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2060 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2050 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2055 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2045 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2040 Trust Plus (Exp Ratio:0.06%)
American Funds EuroPacific Growth Fund® Class R-6 (RERGX) (Exp Ratio:0.46%)
Vanguard Target Retirement 2035 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2030 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2025 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement 2020 Trust Plus (Exp Ratio:0.06%)
DFA U.S. Small Cap Value Portfolio Institutional Class (DFSVX) (Exp Ratio:0.39%)
Vanguard Target Retirement 2015 Trust Plus (Exp Ratio:0.06%)
Vanguard Target Retirement Income Trust Plus (Exp Ratio:0.06%)
Metropolitan West Total Return Bond Fund Plan Class (MWTSX) (Exp Ratio:0.38%)
Fidelity® Total International Index Fund (FTIHX) (Exp Ratio:0.06%)
Fidelity® U.S. Bond Index Fund (FXNAX) (Exp Ratio:0.025%)
Managed Income Portfolio II Class 2 (Exp Ratio:0.37%)
Situation:
1. I am not happy at megacorp (been there for 10 years). I could change my jobs or potentially go get a PhD. Tbh, Alternative job opportunities in Vermont are lacking. However, I do love being here and spending time outdoors when I can. Current job has me working from home since last march due to Covid. The arrangement should continue till September this year. However I doubt if they will open VT offices back up again. Worst case I will be laid off or they will have me move to the Southern US - which I am not a big fan of. Best case, they will keep me on as remote employee.
2. I have had a busy career oriented lifestyle the past 10 years. I feel the strong urge to settle down - buy a house, enter a committed relationship, etc. (on the short term I adopted a dog)
3. I am an immigrant, and still have years to go on my immigration process (barring immigration reform). I got my education in the US and spent my whole working life here. I am qualified and don't feel there is any threat to my long term prospects of being here, but for sure its a risk. To be clear, I want to stay and retire in the US (preferably in VT

Questions:
Life question:
1. I feel like a bit of Russian nesting doll + chicken and egg problem - I really dont know which to tackle first - My unhappiness at my job (change jobs, go get a PhD), my personal life, buying a home, immigration (move to Canada? or back to home country?) etc. Any advice? I think I should fix career first, but that's always been what I fix coz its 100% in my control. <--- Provided some additional context in a reply down below.
Financial Question:
2. How much and how best to invest my cash? Ideally I want to do it in my vanguard account using mutual funds. I did open a treasury direct account with intention of buying Ibonds. Can you please tell me your fund/investment choices and how much you would invest into them?
3. I want to buy a home. I have the down-payment saved for it. But I am scared of the size of investment and tying the cash up incase I have to move. Potentially want to spend ~$350-400K. I think I will end up buying in next 2 years. If nothing, I want to make sure I have money marked for down-payment safe for those two years, but ideally want to put it to work rather than let it sit at Ally.
Note: Due to my immigration situation, I have kept most of my assets liquid. But I am also getting to a point where I should just take a leap of faith and make some choices.
4. Things I want to do but am nervous about:
Explore mega-backdoor Roth - is it even worth it at my current income levels?
Tax loss and Tax gain (I saw Klangfool post about tax gain) harvesting.
Ibonds or EE bonds - not sure if they are right for me given my age or when to buy them.
Tax efficient Municipal bond funds in taxable a/c. Is it worth it or do I just increase bond allocation in my 401K and get rid of my mental accounting logjam.
5. Are my fund choices good, do you suggest I change any of them? Hope my allocations are okay? (Thanks to this forum for NTSX recommendation)
Note: I had a large growth tilt for the past few years but switched back to balanced this year. I am thinking Small-value tilt for the next few? I honestly don't mind leaving it in balanced for a few years and seeing how the macroeconomics play out.
6. Your opinion on my monthly budget and savings? I try to hit $2.5K spend per month it crawls up to $3K inevitably.
7. Am I on track for retirement savings? Any other suggestions? Watch outs for the next few years?
8. I haven't seriously considered GME, crypto, gold, REIT, etc. (keeping true with the boglehead mentality), but if you folks suggest I am willing to put some $$ into those alternative asset classes.
9. I haven't done any estate planning (will, etc.) or additional insurance policies (besides the benefits I get from work). Any advice here would help as well.