I have heard that using surfaces to make features can be a faster approach and I kind of wish I had taken that approach to begin with.
I recently finished the rounding process for those who are following this. I lost count somewhere after 8000 edges and a very large amount of time. It now takes 90 minutes for my part to regen top down.
Unfortunately I'm not very proficient with surfaces. The few times I've tried to make rounds with surfaces I had a lot of trouble getting them to work and the ones I did get working created geom checks. Honestly, I had so much trouble I can just create another thread about surfaces.