im 14 turning 15 in july.i have a TTR-90 that i ride around on sometimes but im serious about starting motocross as i want to get more competitive.what would be a good bike for me? i was thinking along the lines of a YZ125 2stroke but am not sure how well that would go down, anyone got one?also how do you get your confidence back on a bike when a close mate dies doing motocross recently?all i can think about when riding is him...please help, any info greatly appreciated