100% agree with Andy.
And get some higher education at least and you will always have a back-up. I'm exactly the same as you in that I don't want to do anything other than fly but it's stupid to waste your life like that. Of course maybe you will make it without a hitch. But what happens if you get a medical condition that doesn't allow you to fly and you have a huge loan to pay off? Boy will life suck ass then...
Good luck with whatever you decide though