i have been looking at getting a ttr 90 for my 9 year old girl. i have found a 2005 at a good price. this will be her first bike. what can you guys tell me about this as a first bike? my riding buddy got a CRF70 for his girl same age. i noticed the crf 70 is a little taller. how much should i worried about seat at this point in the game? my daughter is a little tall for her age. will see out grow the ttr90 fast?