Can't see PSU, tigerdirect url not working here.
I know that Ivy Bridge gets really hot when overclocked, see if you're going to grab a water cooling closed loop like Corsair H100 otherwise this CM is great http://www.newegg.com/Product/Product.aspx?Item=N82E168...
No need for the OS if you know what i mean
GPU is great, you can make the swap to GTX 670 for extra performance.
Thanks for the quick and reassuring replies I'm glad to see this'll all work together, I wasn't planning on overclocking, but I'll pick up a cooler just in case! Should I get some thermal paste too? Is that unnecessary or bad?