Originally Posted by
hubcyclist
Thanks, really helpful. At first I was thinking maybe I might need a 54 (mainly basing it on the competitive cyclist calculator), but was also thinking the same thing about 58.
Do you have a bike now? If so there are several ways to raise your handlebar, lower it, or extend the reach to the handlebar. Try those before you make what seems to be an arbitrary jump from 54 (if that's historically been your size) to 58. It's a big jump.