I would go with the Hyper 212 evo before the 520. it has a 120mm fan vs the 520's 92mm fans, so it pushes more air. (82.9 CFM for the hyper 212 evo vs 43.8 CFM on the Hyper N 520 = 39.1 CFM more on the EVO)
Are you certain you won't want pcie 3.0 that it a few years time, though? http://www.newegg.com/Product/Product.aspx?Item=N82E168... is an option that gives you the pcie 3.0 with a future sli/crossfire capability that is cheaper than the board you listed. I do understand if you pick the ASUS board, that's a good board, but i personally like to look at the options when i do a build, so i do want to suggest this board as an option.
Yea i wanted to stick with an Asus board, my second choice for a mobo would be the asus saber-tooth Z77. I really just picked it for the price but for an extra 20-30 bucks the Z77 board might be worth it. As for preferences, i would like to stick to gigabyte or asus.
This is a good Asus board that is z77 and near the same price as the link i found of the board you were looking at. I have an X58 Sabertooth myself (planning on upgrading with the optimization of ivy bridge cpus, wife willing), and personally love the board. Just not so much what i paid for it. lol. Hind sight and all that.