If I were you, get use to shooting and get used to being shot at.
I have clearly read and signed a contract with the USAF. Somewhere in the contract, it says something like this:
"I understand that it is my responsibility to use a fire arm with live rounds when needed."
So, once you see the contract, read it and read it carefully. Remember, you're dealing with Uncle Sam once you sign any of their papers.
I'm practicing my shots by shooting crows with my B-B rifle. I don't like crows. Those black-birds are not letting my dog's food alone.
I don't like shooting pigeons because they're not all that bad. And I clearly don't like shooting woodpeckers because I think they look cool. And I'm not willing to shoot at a bird that's smaller than my hand [too hard to hit anyways].

BTW, check to see what kind of help the CG provides for college. Also, check to see if they have their own college [the USAF does]. If they do, go for it. You'll save a lot of many.
I'm already signed up for the USAF for "Full-Active" duty. Uncle Sam provides ful coverage for the first 2 years of any of his military colleges.
Besides, the government does encourage its recruites to study. However, it's the recruite's right to chose so, if he desires.
And remember, your mommy will no longer be around with you to say "Ok son. Time to go to work and school."

*Adam Sandler impression from the movie Waterboy*
"I love my Mama!!!"
LOL