The auction is over... Now it's your turn.
If he wanted a PayPal payment it's probably not a hoax. (PayPal has a protection policy) He has said he will accept a money order, and assume you have his address.
It's your turn now. Send payment. If he wants to wait a few days to clear... big deal. With a feedback of 4, he's new to eBay and may not realize a money order is (almost) as good as cash.
p.s. I don't think I would call someone just because they asked me to. If you want to verify who you are dealing with >Click Here< and goto 'Contact Info'.