Well, you have two major problems. 1. Active duty commitment for pilots is 10 years after completing pilot training (so, more like 11.5 years from when you enter the AF). 2. You need to get commissioned and selected for UPT. ROTC has a much higher chance for getting a pilot slot than OTS (and OTS has a low rate for acceptance). You need to look into that immediately. As an alternative, you could look into the Air National Guard.