I used my GI Bill to pay for my flight training up to commercial. Flew charter for a couple years, and am now going back to knock out my CFI and Multi with my remaining GI Bill money... coincidentally, I'm going to the same school, Cirrus, in Sarasota. I've talked to a lot of schools in this area, and they really seem to have their stuff together, and know how to make the GI Bill work best for your situation.
I didn't finish my degree program at my last school, so I wont qualify for the ATP lower hours. I really wish I would have.
You will not get a bigger bang for your buck when it comes to GI Bill money than you will with flight training. Then add on that you will get BAH, and yellow ribbon, book money, etc... don't miss this opportunity!
PM me if you have any questions... good luck!