As a geezer myself, all my bikes have triple cranks. I always thought going ten teeth smaller in front made more sense than ten teeth bigger in back. And with a Red Clover triplizer, I can even keep my classic Campy crank.

I have a 14-28 freewheel for a 1-1 ratio on Fredo, but my brother's upright bike has a 26/32 low gear, very nice for steepness.