To start with, don't bother VAT registering, you won't need to. But if you're going to, I'd suggest a flat rate scheme. That means you only pay 10% VAT on what you earn, but you can charge it out at 20%. BUT you can't claim anything back apart from IT equipment. Works great for me as I don't but a lot of stuff in. And the print charges get passed on anyway.
But as others have said, get an accountant.