Just for future reference, Newegg has a great resource for estimating required wattage for your system here
. Its just an estimation mind you, but if you've got a supply that will run 50-100W over their estimation, I think you'd be very very safe. Punching in your system information with a few guesses, it looks like you'll need about 850W to be safe, so 1000W should be perfectly fine. Best of luck!