This is my understanding, correct me if I am wrong. I believe if you put the time and effort into it, you can get a guard slot, which is a guaranteed slot with whatever you want to fly. Anyone else hear this?
You might want to consider Army though. If you are in college they have been giving "Unlimited" amounts of full ride scholarships, as long as you can qualify for retention standards. Basically, these scholarships are being thrown out like candy until the fiscal spending is changed. At my school I know of at least four kids so far, activating full rides.