I couldn't find any asus or gigabyte boards with PCIe 3.0 support, only 2 from Asrock. I am gonna change out psu to the corair, thanks!
Asrock has four Gen3 Z68 boards and at least one (extreme4 Gen3) P67 Gen3 boards on newegg. Gen3 being the boards with the PCI-E 3.0 slot. Those boards are new to the market and have been trickling in on newegg the past few days now.
Now for your psu. Take a look at this one down below for a modular psu that will push two of those cards. This psu is manufactured by Enermax for LEPA and it hit newegg last month. That and Cooler Master has never been known for their quality psu's.
8GB of RAM is more than you will ever need in regards to gaming. This combo saves you a few bucks and if you decide to get one of those Gen3 boards well the heat spreaders on this RAM down below match those boards like they were meant for each other.