latexman
Thinks s/he gets paid by the post
Here's where I am at. We file jointly. Age 66. DW 71. Both collecting SSA. 24000 conversion keeps us at 0 taxes. SSA pretty much covers our expenses and if not I take from the Roth.
Have you forecast your and DW's familial longevity to see if one of you may have significant time filing single? That may put one into a non-zero tax bracket when RMD's are required.
My DW and I are the same age. DW's folks outlived my folks by 10+ years. As I forecast her expected situation into the future for that long of a duration, I will probably lean towards converting more.