My main worry is that I don't know when to start that Roth conversion ladder. If I start too early, I can't stop it because I have to make substantially equal distributions from my 401K. Or do I? Is the substantially equal part forever or just until a certain age? I'm pretty close anyway -- I THINK I want to start that ladder at age 54 (which is coming up fast)
ETA:
Ah, a quick google makes me realize I have nothing to worry about. One needs to continue the SEPP for 5 years or until they reach 59.5, and then the amounts can change. Thank you very much.
So if I understand the ladder correctly, in years 1-5, I draw down $40K and immediately reinvest that in my Roth, and I draw down another $40K from my Roth prior year contributions or another account to live on, right? So taxable income would still only be $40K.