You will most likely not need all the features of the P8Z68 Deluxe. I would say check out P8Z68-V, you will probably have enough features from that board.
There are much cheaper memory kits available that are just as good, you don't get much benefit going past 1600mhz.
So get a 2x4GB kit with 1.5V CAS9 1600Mhz. Should be available between $50-60 for Corsair/Gskill/Kingston/Mushkin.
I would rather recommend Corsair HX850 than that PSU, close to the same price.
Also consider the 560Ti's, or possibly the new Sapphire VaporX 6950 - Check hardocp.com for the review.
Dual bios card, which is flashed with a 6970 bios as the 2nd bios so you might get lucky and have a 6970 for cheap.
I agree for the most part with rvilkman. I would downgrade the motherboard to the Asus P8Z68-V PRO. The Asus Maximus Gene is a great motherboard, but I see no reason to go with it unless you wanted a mATX board instead of an ATX board (and considering the size of your case, you really don't need a micro ATX).
-For RAM, law of diminishing returns begins to set in after 1866 MHz, and stick with a set that is rated for voltage at or below 1.5v (recommended for Sandy Bridge processors).
-For the PSU, 750 watts would be more than enough for your system unless you plan to add a second graphics card, and 850w is going into overkill territory. Here are a few options: