That's more or less what I'm doing so yes that PSU will be a good one. In terms of pure numbers you can go for a 850W but it doesn't leave much headroom.
"A Great Ship Needs Deep Waters: 14 Power Supply Units with 1000W+ Capacity"
http://www.xbitlabs.com/articles/coolers/display/1000w-psu-roundup-2.html#