I am considering the purchase of a 2000 KDX 220 and plan to ride it in some enduros and hare scrambles in the southeast. The bike has most of the suggested mods and the suspension has been worked for a heavy guy already. I am 5'11'' and about 215 lbs. Am I too heavy for this bike to hang in there in "B" class racing? What would be a fair price for a 200 KDX 220 in good shape with the mods (i.e. pipe, suspension, etc.)?