So a majority of people are saying if i am going to get into motocross, and are a beginner that i should get a 250 rather than a 450. now before you answer note that i am 249lbs and 6' 4'' tall. I am wondering if a 250 would be able to carry me on a track with really loose dirt or one that is slippery, considering my weight and height? I'm thinking about an 09' KX 250f