Don't rush into it: give it a good amount of time.
If you're still not happy, I'm not going to recommend spending time on campus if the prospect of it doesn't do anything for you. The OU is a highly respected institution in its own right, and will do you well so long as you're prepared for the life and teaching it offers as opposed to the more conventional "university experience."
Anyway, if you know you can budget, do your own washing, know how to cook, and don't enjoy the prospect of someone vomiting on your communal carpet, there's no real reason to go for "life experience."
Also, you might want to consider doing a full-time course somewhere else. It seems (correct me if I'm wrong) that you're just not all that happy with where you are, not that you're disillusioned by full-time study in general. Royal Academy of Music, perhaps? If you want teaching experience, you could find time to do that besides full-time study. There's plenty of opportunity for volunteer classroom assistants and the like.