Fuel Truck, what you've got on your list there is about 95% the same as what I'm building right now.
Regading the motherboard, take a look at this:
http://www.amazon.com/MSI-Computer-C...s=msi+z77a-g45
Amazon has a great deal on this board right now. It's the same price as the one you have listed, but this supports SLI (and actually has room for two big GPUs).
I bought mine yesterday at a store that matched internet prices, so you might be able to try that as well.