I am really into riding and so are all my friends in my small college town. I have this friend who is 6 foot 3 and has been over 350 pounds for many years now and is trying to shed the pounds. He has been hesitant to ride because he says he has lost his balance. I think it may be that he feels a bike won't support him. But if I knew some tips for getting him going again and a few reasonably priced bikes that would be what he needs I think I could help to facilitate this whole thing. I've seen Trek and Cannondale recommended but for 2/3 the weight. Oh, I live in San Marcos Texas and it is super hilly so something that has low gears would be great.