Congrats and good luck Hawker.
I graduated from the USAF Academy, class of 1994. The first summer sucked. I wanted to quit almost every day. Then the first year sucked too, and I wanted to quit every day. I'd get up in the morning, look in the mirror, and try to find one specific reason to quit for when they asked me. I usually couldn't find anything other than I hated it there. If I was able to come up with something specific, then I'd try to find one reason to stay. That was usually pretty easy, so I stayed.
My advice is to not quit for any reason during your first 2 years. You'll regret it for the rest of your life. If you really have a better opportunity after your first 2 years, then go for it. But I know of only a handful of people like that, and everyone else will always wonder if they could have hacked it. Yes, if you get a 4.0 your first 2 years and are offered a full ride at Princeton or Harvard, consider jumping ship. But otherwise, stick it out. 4 years really isn't all that long and you'll have opportunities you really can't get anywhere else.
My only other advice is to take the GREs when you graduate. I was sick of taking tests and headed to pilot training, so I didn't even though they would have been fairly easy for me despite my relatively low grades. Later I realized that good GRE scores would have been the ONLY thing that could get me into a good grad program given those low grades I had, but I'd pissed away the opportunity because I just wanted to get the heck out of there as quickly as possible. Bad mistake, and I missed an opportunity for the USAF to pay for a Masters degree because I couldn't prove the academic qualifications necessary to enter a quality program.
