Agreed that Tebow will stay in school. He isn't a pro-caliber QB, YET. If he had to, he could throw 40 times a game and put up huge numbers. But Florida is so good that he doesn't need to.
He has all the potential in the world to be a good NFL quarterback, all he needs is coaching in a pro-style offense. He won't be a Peyton Manning, but don't be surprised if he becomes a starter at some point. But like you said, who really knows, it's still way too early to tell.
I don't think it will be a blowout, but I expect Florida to win by at least 10.