What pops out to me is the RAM you chose. It doesn't even list timings. Essentially, it seems like its not gaming caliber memory. for the extra $10 I'd go here:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231276&cm_re=ripjaws-_-20-231-276-_-Product
As far as the dual 5770 vs single 5850... I think it makes more sense to go single GPU. two 5770's while being pretty sweet, leaves you no where to go later on. if you got a single 5850, that would certainly be eough for high end gaming. then later on 12-18 months down the road, maybe the price drops heavily and you can CF two 5850's. If you start with 2x5770, the only way to upgrade is to dump them both and start anew. Plus you'll be costing yourself electric bill money by running two I would imagine, even with the small footprint.
Are you utilizing combo deals? your cart doesn't show any... or is that because you can't put combos in linked wishlists?
Lastly, your MSI 790X doesn't support DDR3 1333 or DDR3 1600, according to the newegg specs.
If you are going with the beta evo remember you will need to buy at least 1 120mm fan for the exhaust, but getting a second for the top would be ideal. they have the diamond 5850 in stock at tigerdirect.com, and orders over $100 ship free. so you could get your 5850 there, and throw in some fans from TD to avoid silly fan shipping charges. Or look for different cases too i suppose. It just seems like a hot case for so cheap.
again if you need to save more money, you could pass on the hyper 212 for a while and just use the stock cooler. since it looks like you might get a casewith a CPU cutout, you could always replace the stock HSF later (without breaking apart your system) when more money is available.
The OCZ PSU deals are pretty much ridiculous right now. Assuming you get the rebate (be fricken meticulous about the rebates...) its a 700w modular PSU for $53, plus a $20 combo with a handful of different HDD or optical drive options. If you aren't planning to CF 5770's you could even look at the 600w version to save a few more bucks.
I don't know what it is about your thread but it makes me incredibly verbose...