If your goal is to go to pilot training, at all costs, and are willing to pay any price (I was that person as a H.S. freshman; I would kill to become a fighter pilot), then the AFA is probably your best bet. Don't go there unless you truly desire a military career as an AF officer. You will not make it otherwise.
Men and women who showed up "just to check it out" or who were under family pressure to attend were usually gone within 5 weeks. Academics took another huge portion. A few left because they decided the Air Force was not for them.
Investigate the current rates for grads of all commisioning sources to get a UPT slot... it changes over the years. When I attended the Zoo, you were expected to go to pilot training if you were medically qualified. The only competition was for which UPT base to choose. Nowadays it appears to be competitive, meaning your academic and military grades are mixed and the class ranked, with only the top attending pilot training.
In my opinion, this is a bad idea, as often the very best pilots turned out to be those with a poor military average. These guys had a way of fighting the man, taking risks, and getting in trouble, but their mentality and thirst for a bit of excitement and danger often translated into good hands in UPT. The top 10% of USAFA grads in my UPT class had a huge proportion of guys who were considered military "screw-ups" at the academy.
ROTC: AFROTC grads appear to viciously compete for a few very limited UPT slots. Could be a tough road to UPT.
Good luck, I know what you are going through. Making your dream come true will take tremendous effort. The result may be having you handed the keys to a T-38, then an F-15 or C-17, at 24 years of age.