I'm 5'8" & I weighed (at the time) 230lbs. Before I had my current bike , I had a 250cc. For most people , it would be sufficient. I'm addicted to power so now I ride a 2006 Sportster 1200 with a DMC trike kit. If you want to get on a cycle , you can buy foot pads & have them custom installed. (that's what I did) It help's you get on fine! I hope this helps! You shrink , when you get older. Everything that I have (including my operators license) says 5' 10".
Irish
P.S. I'm down to 225Lbs & hope to lose more! Should be easy. The chemo has ruined my appetite!