What Dirtbike should i get.?

I am 15, 5 feet 6 inches and i weigh 135. I am going to race. if i were to get a two stroke i would get the kx100, kx125,or cr125. If i were get a 4 stroke it would a kx250f or crf250r. Only those bikes.I already know that i am getting a 250 later on down the road the problem is if i can handle it right now. So i should get the two stroke now cause i can probably better handle it, and then sell it later and get the 250.Or should i get the 250 right away. And if i were to get the two stroke first should i get the 100 or 125. I dont care about the cost or the maintence just about if its to big.

i would prob. go with the 250 either honda or kawaski because there both good bikes.the reason why you should just go to the 250 is because youll out grow the 100 to fast at 5 feet 6 inches in my opinion if it is to big you can always lower the suspension a little or put a seat on it that is not as tall.

if i were you i would get the kx125 cause its about right to fit your age and wieght!!!! have fun riding!!p.s. i perfer four wheeling but dirt bikes are fun to!!☺