im 14 years old 5,5 and growing about 130lbs i ride a kx 100 and want to upgrade to something bigger that will last longer. i only been on a bike for 1/2 a year so i have experience but still learning to get better. the kx 100 will last me a year if i race supermini so i need to get something else. i was thinking about a 2stroke 125 (sx125 cr125 yz125 etc) but i like the bottom end power of 4 strokes so i was considering a 250 4 stroke (race bike) yz250f crf250r rmz250 etc... so what do you think i should get? when i get better at riding i was thinking i might race some hare scrambles.