Admittance into the USAF

Elp, I figured you could be the main one to help me on this but anyone else who knows about it, I would gladly accept your contributions. I will be senior in high school next year and I am currently aiming to joing the United States Air Force. I recently received some information from the U.S. Air Force Academy, in response to my ACT scores being sent their. I checked the Academy as one of the schools for my score to be sent to. I am currently trying to decide whether or not the Academy is what I want to do or whether I should enroll in the ROTC program at a University (University of Alabama being where I want to go if I take that route). I sent of for information from the ROTC program at U of A, and I got some interesting information back. Can you tell me what the chances are of my getting to fly by doing either route. I am not really sure. I do have 20/20 vision and I have thus far maintained a 4.0 GPA all throughout high school.