hey im new to the sport and was wondering if i should go for a cr125 or jump right up to a 250 to save the cash. How long would you say it takes to grow out of the power? i would mainly use it for just ripping around doing hill climbs a few trails and going to the track the odd day. im 16, 5'6 and 150 pounds. i have a little bit of experiance on bikes but not a ton.