I think, for now, you're getting a little ahead of yourself. Why not let things unfold slowly and just go with the flow? At this point, the two of you haven't made anything official. Maybe you should just keep things casual for a bit until you are both ready to move on to the next level.
To be honest, I get jealous when I hear that someone's signigicant other is only 2 hours away.... 2 hours seems like nothing to me (I can't even get to my bf in a 2 hour plane ride!). However, everything is relative...so what seems close to me is a million miles for the next guy. Anyway, if it eventually turns into something special, the distance will definitely have an affect, but it won't stop the both of you.
For now, my advice to you is to slow down a bit. Oh, and don't be afraid of getting hurt...nothing can guarantee that. I'm not trying to be pessimistic, but she could be living next door to you and still hurt you... relationships are always about taking risks.