From all the info OP has provided:
Great job paying off the house, banking what you have, and keeping your COL low. Lessons there for many people.
And now for the rest......
-this proposal has all the signs of someone who realized they have a net worth bigger than they ever imagined and are wondering what they could do with it. I know how that goes, was there in 2006-early 2008 (note my join date
). Life and the market take their own course and it was 7+ years later when I bailed.
-It's not a $million+ to support you for the next 35-45 years, it's ~$150K available immediately, maybe taxes would reduce it. Everything else has some extra cost or time to access. And there are a lot of years ahead for you for life to complicate things. But fewer for the DW.
-Forget the home equity. You need a place to live. If that was in your Firecalc run, remove it and see how the numbers work. Maybe you can sell the house and vagabond around for a few years with your TT with no home base, and have the cost be less than maintaining your current residence. Others have done so, most I am aware of decided to put down roots after a few years. But there goes the "tax free" dog walking income and your dream job and the other one helping me find furnace filters on Saturday night.....
-It appears what you're really considering is downshifting and taking on 2 PT jobs that will presumably pay less than you're making today. But those will have you tied to a schedule that you can't control. Is this better than your higher paid WFH job with benefits?
A few things to think about if you delay your plans:
-Have the wife find a regular W-2 job if she is able. Might be more money and would add to her SS payout.
-Build up your cash reserve. Too much is never enough after the big paychecks stop.
-Consider reducing your 401k contribution to the lowest level to get the maximum employer match. Put the rest to work building up cash or in your taxable brokerage account.
There's a lot to think about, and it's hard to go back after you leave if it doesn't go as expected. My compliments for putting this out there and soliciting comments from people like me