Thank you for your replies. They helped focus my thoughts and questions.
My biggest concern was having enough funds available in non-retirement accounts by the time I reach FIRE. Right now 58% of my funds are in retirement accounts with the remaining 42% (about $100k) in brokerage and savings.
But assuming I keep contributions the same as today ($25k into retirement accounts each year and $65k into brokerage account), and assuming 7% return each year, then in six years the balance is projected to be:
$401,000 (retirement)
$647,000 (non-retirement)
Total: $1,049,037
Retirement Non-retirement Total
Today $140,000 $100,000 $240,000
2022 $176,550 $176,550 $353,100
2023 $215,659 $258,459 $474,117
2024 $257,505 $346,101 $603,605
2025 $302,280 $439,878 $742,158
2026 $350,190 $540,219 $890,409
2027 $401,453 $647,584 $1,049,037
You don't fit GCC's profile, so his reasoning doesn't apply to you.
One other difference: when it comes time to take Social Security, Roth withdrawals do not affect Taxation of Social Security benefits but income from taxable accounts does.
You mention "stop contributing to a Roth IRA" - are you using the Backdoor Roth process? Asking because the Roth IRA Contribution Limits are very restrictive for MFS.
Thanks for pointing that out. We are recently married and both filed as single last year. I didn't know about the $10,000 Roth income limit for MFS. Seems absurd that they would restrict this, but we may need to file jointly next year to preserve the Roth, at least for her. We were planning to do MFS because we are trying to keep our finances separate, but this makes things more complicated.