Learn to eat first. Your stats on your profile could be better. Use these next few years to learn to eat big and clean. Once you get some more weight on your frame, you'll start looking big. After your solid and committed and still want to pursue AAS, then thats your decision. I would like to do the same as you. As Gixx stated above, nationals is a whole different level. If its what you want though, go get it. Do you have any shows in the near future?