All-righty, I think I'll play around with the hardware I have for now while I look for a mountain bike. I'll probably grab some new tires and under inflate them a little.

If I change the rims out to those SunRingle rims, can I use my existing hubs or should I buy new ones? The gears are in pretty good shape and the hubs turn well.

My friend is going to have a very nice bike after I finish tinkering haha.