are your parent(s) going to support you and give you some money towards it? I moved out (for a rather different reason) when i was 16 at the end of year 11, and they're paying for my rent and some living costs, although I found myself a part-time job to support me during year 12 and 13. im at uni now so it doesnt make any difference now though.
also where are you planning to live? I homestayed at someone's house (catered in my 1st year away from home), self-catering at a different place in the 2nd year and whilst it was weird at first you get used to it pretty quickly, and i had a great fun too but at the same time you have to be careful to get on with the rest of the housemembers, otherwise you're on your way out.
you wont be able to live by yourself unless you're somehow given the house, etc. I'd recommend against it anyway since you WILL probably get lonely after a while no matter how many friends you have.