Check out my 1K build, I don't know your budget but that's not really a balanced build. 12GB or ram is overkill for even professional users. 8gb is good enough and saves you money for other things.
The H70 = Terrible Price/Performance, The Hyper 212+ could easily overclock the 2500K to 4.6ghz on air. The H70 is just bad, not even real water cooling.
I don't really like XION as a company. It may get good reviews, but I don't really like it that much. I think The XFX 750 @ 100$ AR is a great PSU with a really nice and long warranty. Plus it's a solid company. And would easily power SLI 570. But your choice.
May be the case for you and you save 30$-40$.http://www.newegg.com/Product/Product.aspx?Item=N82E16811119160&cm_re=HAF_932-_-11-119-160-_-Product