I'm 16 6'3, and 185lbs and I have a CR125 but i'm wanting to get a different bike and I was looking at the 250 or a 450. I am just wanting some input from other riders. I ride a lot of trails not very tight trails, no sand at all, and I am gonna start riding track soon. I just don't want to get the 250 and want more power, or get the 450 and it be too heavy. So what do you guys think I should get?