Couple things I noticed:
Unless you are an audiophile you can ditch the sound card, on-board sound works fine.
Cooler Master doesn't the best track record for power supplies, I would suggest the OCZ ZS 650
or Corsair TX650 V2
16GB of RAM is serious overkill for gaming, you'll never need/use that much, better off with 8GB G.Skill Ripjaws X
With the money you save you can get a better graphics card, like a GTX 560 Ti or HD 6950, or better.
Also, Antec does make a nice case, but if I were to pay more than $50 for a case I'd want some cable routing options.
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X