850W should be plenty. I'd suggest this: http://pcpartpicker.com/part/corsair-power-supply-cmpsu850txv2
Seasonic made, and 80Plus is largely a gimmick. It guarantees it can meet the labeled spec, but efficiency doesn't really matter beyond that.
The Deluxe is probably a bit of an overkill board; there's really no advantage to the high end boards.