I've been a BH Forum reader for a little while now and am so glad to have found this community! I'm seriously considering retiring from Mega Corp in about 3.5 years and am looking for a retirement readiness review from my favorite BH experts. I've got a few questions below and would appreciate any insights as to what I should be doing differently. I'm sure I am doing some things that are considered "un-Boglehead." Thanks!
Emergency funds: Yes, 7-8 months. In cash and short-term CD's.
Debt: No debt other than mortgage on primary residence. $225k, 30-yr fixed, 3.125%, at current rate will pay off in 2038

Tax Filing Status: Married Filing Jointly
Tax Rate: 24% Federal, 9.3% State
State of Residence: CA
Age: 56 (DW is 55, essentially SAHM and some part-time work)
Desired Asset allocation: 50% stocks / 35% bonds / 15% Cash (at start of retirement)
Desired International allocation: 20% of stocks
His Defined Benefit Pension (frozen): $58k annually (100% joint sure) at age 60 (2023) no COLA.
Lump sum option - $835k at 60.
SS: He plans to take at age 70. Estimate $62k annually ($3650/mo for him, $1550 DW spousal benefit).
Education Savings (these are non-retirement assets reserved for kids' remaining higher education discussed below)
$137k in 18-mo CD (matures 3/2020)
$146k in 529 plan (about 25/75 stocks/bonds)
$132k in 529 plan (about 25/75 stocks/bonds)
No significant taxable retirement savings (<$15k - Vanguard). Expecting about $125k in bonus money (after tax) over next 3.5 years which will be thrown at taxable retirement savings (Vanguard).
Current retirement assets (totals to 100%):
His 401k - $1.1M
11.1% Lifecycle Retirement Fund (0.28) - about 50/50 stocks/bonds
8.0% Bond Market Index Fund (0.03)
5.6% S&P 500 Index Fund (0.03)
3.9% International Index Fund (0.09)
5.3% Russell 2000 Index Fund (0.03)
6.5% US Large Companies Fund (0.27)
19.5% Stable Value Fund (0.29)
5.0% Mega Corp Company Stock
His Rollover tIRA - $398k (Actively managed, 0.7% AUM)
0.4% Fidelity Advisor Strategic Income Fund - FSRIX (0.74)
0.9% Fidelity Low-Priced Stock Fund - FLPSX (0.62)
0.3% Fidelity Magellan Fund - FMAGX (0.67)
0.1% Fidelity Select Gold Portfolio - FSAGX (0.86)
1.8% SEI Core Fixed Income Fund-Y - SCFYX (0.41)
0.9% SEI Emerging Markets Equity Fund-Y - SEQFX (1.44)
2.4% SEI Global Managed Volatility Fund-Y - SGLYX (0.86)
1.0% SEI International Fixed Income Fund-Y - SIFIX (0.82)
1.2% SEI Large Cap Value-Y - SVAYX (0.64)
4.1% SEI Multi-Asset Income Fund-Y - SLIYX (0.96)
1.3% SEI Short Duration Government Fund-Y - SDGFX (0.33)
4.8% SEI U.S. Managed Volatility Fund-Y - SUSYX (0.65)
1.6% Vanguard Growth Index Fund - VIGAX (0.05)
2.6% Vanguard Wellesley Income Fund - VWIAX (0.16)
His Roth IRA #1 - $107k - via Mega BD from 401k (Actively managed, 0.7% AUM)
1.6% American Balanced Fund - AFMBX (0.29)
1.5% Lazard Global Listed Infrastructure Portfolio - GLIFX (0.96)
1.5% Principal Global Diversified Income Fund - PGDIX (0.69)
1.7% Vanguard Consumer Staples Index Fund - VCSAX (0.10)
His Roth IRA #2 - $46k - via Mega BD from 401k
2.7% Vanguard Growth Index Fund - VIGAX (0.05)
Her 457 plan - $28k
1.6% Fixed Income Fund (?)
His HSA - $19k
1.1% (invested in about 60/40 stocks/bonds, not using for medical expenses at this time)
New annual Contributions
$62k to his 401k (pre-tax, comp match, post tax (for MBDR), catch-up, employer defined contrib. pension)
$7.9k (max) to his HSA account
$2k to her 457 plan
Current Situation: Two kids in college. One has 2 years of undergraduate left at big private. Other will start medical school next fall (don't know where yet). My plan is to leave both kids debt free upon completion. In today's dollars, after tax expenses in retirement are estimated at $9500/month for first 15 years. Maybe $8000/month later on.
Questions:
1. Feasibility of retiring in March 2023 ?
2. Suggestions on the two actively managed accounts ? I feel like I'm getting good advice on how to take distributions, do Roth conversions, etc. which is helpful leading up to retirement. But I'm paying more than I should...(DW likes idea of having someone to go to for advisement, taxes, estate planning, etc. if I were to pass suddenly - all services under one roof in this case).
3. Thoughts on lump sum pension vs. the annuity ? Both reasonably healthy with mid-to-late-80's longevity on both sides of family.
4. Suggestions on proposed portfolio AA now and upon start of retirement ?
5. Thoughts on paying off mortgage at expense of curtailing investments ?