Lucky guy.
Yes, wait for Apple to send you the new machine, sell it on ebay 1 or 2 weeks from now but make sure not to open it as this will lower the cost of the machine to some degree (it's like a car).
Sell it for what, 2k?
Wait for the updated MBP come out, buy the model with the best processor, stock RAM, and whatever options they have. Which might run you 1800 or so, buy third party RAM from a trusted dealer online and you'll probably even have some money left over!
I know for a fact that its going cost more then 1800 because the model I have came to be 2400 at the apple store.