im a beginner to mountain biking, but i ride dirtbikes alot. i want a bike that i can ride on the trails, the same trails i ride my dirtbike on. im only 13, so moneys tight (i do have a summer job with my dad, and thats paying for the bike) Right here is the bike i was thinking. do you think it could well suit me? and if it matters, i am: 13 years old 5'6" 130 lb thanx! (by the way, this is my first post here!) p.s. what is Shimano EF-29 EZ-Fire? is it like click-shift?