I'm retired, age 64. Spouse, 57, works. Our all-Vanguard portfolio is conservative. Spread across her 401k & 403b, my Rollover IRA, our ROTH IRAs, and our Taxable Account, our investments consist (roughly) of: 70% Vanguard Target Retirement Income Fund 18% Vanguard TIPS Fund 9% Vanguard Intermed...