If you think you'll be struggling financially when you move out on your own... do you think you'll be that much happier? I don't know what the situation is like at home that is making you so stressed which is why I'm asking. (Are you just worried about not having a love life or are your parents really strict?)

Have you already signed the lease and everything? As for the price possibly going up if you delay this decision, that may not be true. Especially since the housing market isn't that great right now, I doubt rent would increase by that much. I mean, this is a decision that you don't want to rush into and regret because you'll be locked in for at least a year or more (because the longer the lease, the better deal you'll be getting).