i've been wanting a dirt bike for a while now and have come to the crf230f. i was wondering if it was the bike for me? i am 15, about 6' tall, 135 ibs, and have never rode a dirt bike before. but i have rode a polaris four wheeler before. i mostly want the 230 for trails and maybe some jumps. i was just wondering if it was worth buying it or not....... speaking of that, i am kinda low on cash, so is anything more affordable?