I am 6'4 210lbs and I am looking for a decent trail bike. I would rather have a 4 stroke than a 2 but I don't know enough to know whats best. I was looking at a xr250 that a buddy wants will sell me if I want it, is it too small or should I get bigger. I do want to get the best bike so I don't have to keep upgrading later. What do you guys suggest, and how much would the 1999 xr250 sell for?