I am about the same size now that gravity has struck back.

50 years ago, 165 on the track, 170’s for the road bikes. I bought a set of 167.5’s and thought they were grand, remember this was in the age of Junior gear limits, last year of 44 x14 on the road.

15 years later bought a mtb. 17” frame with 175 cranks, I adapted and those worked better than I expected.

my comment is translate the saddle fore/aft to zero out the crank length change.