Hey im new to this site. im 15 and have a kx250f. Ive been riding since i turned 8. i mostly do trails rarely do tracks. i need a bike i can ride thats trail legal so i have to sell my bike. i was interested in getting a 450 rather than another 250. do you think that would be ok since im mostly on trails. Im 5'10" about 135 140 pounds. I think i would be able to handle the bike. let me know what you all think. Thanks.