Wax it right away. Last year was my first season and I didn't have anyone to teach me anything so I went 6 days on factory wax. The 6th day on the factory wax was the worst day ever. It was so much easier to catch edges, the board didn't glide well at all, and everything too so much more effort. I eventually went out and got my own waxing stuff and the first day on the fresh wax was like sex on the beach. It was incredible. Wax her right away, it will always be better than factory wax.