Looks like a pretty decent build. I made three changes:
Swapped out the motherboard for a Z77 Asrock model. Not a huge deal but would probably serve you better being the newer chipset.
Also swapped out the powersupply. The one I added is cheaper and more powerful and from a better manufacturer.
Also, I removed the sound card. Either motherboard you choose will have built-in audio and really, adding in a sound card isn't going to do anything that the built-in audio won't.http://pcpartpicker.com/p/jKg5