I don't know how many times I have to point this out but I will every single time: extra thermal compound is a complete waste of money! No matter how much you spend on a rig!
I'm not sure what I want to know. If someone had said "This build looks good", it would be enough :] But I guess as long as no one else posts otherwise, I will order tomorrow.
As far as graphics go a dual GTX 770 SLI setup is about as good as it gets right now - it even beats the $1K GTX Titan for less money. You don't need an i7 or 16GB of RAM for gaming. The PSU I included is among the best on the market.