Rosewill Stallion Series RD600 600W ATX12V V2.3 SLI Ready CrossFire Ready Power Supply
Horrible. Get http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9 instead. It's cheaper and a lot better.
Remove the sound card and use onboard sound. With the saved money, put it towards a better graphics card.
I have to agree there, you can always get a sound card later if you have good headphones or speakers to pair it with, but it will not benefit your gaming performance. For the video card, try to shoot for a GTX 760 or a Radeon 7870.
-What is best in life? -To crush your enemies, see them driven before you, and to hear the lamentation of the women.