hey damien im about ur height 5,3 and i have a kx 60 its the best bike u can get in it class. when i first got it it was my very first dirt bike never wridden one before and thought it would be hard to learn to shift and cluth but tokk me bout 3 days and i can shift perfectaly. and the bike it self its pretty a good size may sound small but its perfect for me yamahas have no power in those bikes just to let u no