Okay so i took a 10 year break from motocross. Not by my choice, i use to race a 125 2 stroke but when i came back i bought a 2014 honda cr450r and started racing again. Ive been to 6 races and improved every single one. But ive got bugs in my ear telling me i would be better off on a 250 (4stroke). Like i said ive been doing nothing but better and im about to start another series and was wondering if someone could give me a little guidance because i feel good on the 450 but in the back of my mind i feel like they could be right about downsizing.. help!! (I weigh 180lbs and im 23)