Nope. I wanted maximum interest rate duration and I'm betting that inflation will be higher than my mortgage interest rate, so it will eat more of the outstand

Nope. I wanted maximum interest rate duration and I'm betting that inflation will be higher than my mortgage interest rate, so it will eat more of the outstanding balance. Adjusted for inflation, my balance will be less than half what it is now. I don't anticipate staying more than about 15 years, and the capped rate is low enough that in the worst case this is still reasonable, and I'll have greater optionality to refi if I have a bigger balance