So I've really been getting into spinning at the gym lately, and I'm wanting to take it outside on my mountain bike(if I can stand the heat). I have a GT Tequesta that is probably 3-4 years old, pretty good components, and I really like it. I mentioned to my roommate that I was thinking about getting some shocks for it, and she said I should just get a new bike. The frame is kinda heavy, and of course, I can rationalize a new bike. Any suggestions as to what I should do and possibly a good bike to invest in if I do decide to chuk it?