USAFA wants good grades.  A 3.30 probably isn't going to cut it.  Do whatever it takes to get a 4.00.  Remember that the average GPA at USAFA is 3.90.  Other than that, it sounds like you are doing well.  Join Civil Air Patrol and talk to your counselor so they can further help you.  AFA doesn't care if you know how to fly a plane.  They want you to focus on academics now.  Not saying that it doesn't help though.  Good luck!