First Gaming Build

Not a particularly good PSU and out of stock. You would have paid $10 shipping on it.

At that cost the $80 Rosewill Capstone is a far better deal. Free shipping, 80Plus Gold, incredible performance for the price. actually delivers more power despite the wattage ratings.
Silverstone 600W = 42 amps on the 12V rail
Rosewill 550W = 45 amps on the 12V rail
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182068

HAF 912 comes with two fans and no USB 3.0 ports

Rosewill Challenger has 3 fans and two USB 3.0 ports
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147060

You really should get an AM3+ board. Here's an Asus model with 970 chipset
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131767