Well, that's a tough call man. It depends on how bad you TRULY want that bike. If you think it's just a phase, I'd take a pass on the bike and just stay home.

If your hell bent on getting it, nothing is going to stop you, obviously, so your going to have to move out and then get the bike. But consider this before you move. If you have never been out on your own before, it's not easy at first. There will be lots of new things to you. Not to mention, a lot more bills. With your current budget and living situation, you might be able to afford it. Once you move out, your budget will change. Give it thought before you make that decision. That bike shouldn't be your #1 priority when you move out, there will be a lot more to consider then that...trust me!

Hope that helps.