I'm generally inclined to encourage people to get out; that being said, you'll have 2.5 years left *and* you're flying. If you're flying now you're in a good position, assuming the AF doen't hit you with a 365 followed by a desk until retirement. Sticking out the last couple of years is probably worth a few senoirty numbers.
The other factor is whether or not you're done with the AF. I wake up every day greatful that I'm out of the AF, regardles of anything else going on in my life. A checkride failure and a couple of speeding tickets may mean I'll never work for a legacy, but life is still better on the other side. If that's the case for you, no amount of money will make up for losing those years of your life.