I think the thing I'd get first would be your own vest. IMO the vest is the one piece of kit I can't use someone else's. I can probably fly someone else's rig and get away with it as long as I'm in my own vest. And to be perfectly honest, my vest isn't even fit totally right for me. But I know it, and I feel comfortable and at home in my own vest. It's hard to explain, but it's like my little turtle shell.