I was in a similar situation in 98. For me it was go to the airlines or stay if I got hired into the U-2 program. I figured the airlines would always be there but if I didn't fly the U-2 then, I would never get another chance. I stayed and have enjoyed it and would do it the same way again. The time has gone by fast and I retire at the end of the year. I can't wait.
I have an interview with SWA next month and other apps out as well. I hope your decision works for you.