Need opinions/suggestions on first PC build

Do you plan on possibly SLI in the future? If so, you need to up your PSU to the 750 watt version. If not, then you will be fine.
I would replace the Gigabyte 670 with the MSI 670 Power Edition.
Can't go wrong with the 3570k, best you can buy right now.
Finally, I would replace the RAM with low-profile stuff like this.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Hope this helps!

I'm not sure about SLI, probably not.

Why low-profile RAM? As far as I know the only difference is the size, and the case I chose isn't exactly small.

Lower profile RAM so it wont conflict with the 212 EVO, not the case.

600W is plenty for the rig as its stands, but wont (or barely) support a dual Crossfire/SLI setup. Considering that your mobo supports it properly, might as well so you have the option later.

This guy said what I was going to say...

What PSU would you recommend that's enough for a possible SLI in the future?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
or
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

A good quality 750W is plenty. The Corsair unit Zared showed is pretty good, if lacking in features. Some Rosewill supplies are decent, but I still wouldn't trust them.

Do you think I need low-profile RAM for it to fit with Hyper 212?

If you only have two sticks, you wont need low profile RAM. But if you ever decide to upgrade to 16GB, it would become a problem.

I only have two sticks so I guess I won't need low-profile then. After all 8GB is plentiful.

For me personally, I would go with Corsair. I have never owned a Rosewill PSU, but I have heard good things about them. The one I listed is guru recommended too, which has some amount of value.

Bump? Any more suggestions?