UPT slots are in constant flux. You have to figure out what number ROTC will be offering in 4 yrs and what USAFA will be offering. Almost impossible to tell.

Story time--In the early 90s UCLA was getting MAYBE 1 UPT slot per year. Are you going to be the #1 guy in your ROTC unit? How many seniors in that ROTC unit 4 yrs from now? 10 or 100? What school are your odds better at making # 1 for that UPT slot? Is USAFA giving 400 slots out of 900? Will your ROTC unit even get that 1 slot? Maybe no slots for them that year. Constant flux and difficult decisions to make.