I am 12 years old , 5'5 and weigh about 140 pounds. I REALLY want to get another dirtbike. I used to have a 75 and a 85 but the my dad sold them, do you think this bike would fit me ? Also, what's your opinion on the bike, how do you like it ? Please, help me i'm trying to prove to my dad it's the right bike so he will buy it for me :] Thanks .