Just checking to see if this is a decent gaming build

This will be my 2nd custom build. I will be getting this within the next month.

I will list each part and give a reason why I chose it. Please add any advice or criticism. I welcome it. I would rather be pleased with my build than suffer any downfalls due to poor judgment on my part.

CPU - i5 2500k. Pretty self explanatory I think.

GPU - MSI Radeon Twin Frozr III 6950 1 gb - chose this because I don't plan to go Crossfire and it was recommended by multiple people on here.

Mobo - Asrock Extreme3 Gen3 Z68 Socket 1155 - Got great reviews as a budget board, and it has a good set of features.

Case - Rosewill Challenger - $50, great reviews. Tool-less Doesn't have anything I don't need and has everything I do

RAM - G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory - Great reviews and cheap

PSU - RAIDMAX HYBRID 2 RX-530SS - Decent Reviews and enough power for what I need
Aftermarket cooler - CM Hyper 212+ - One of the best rated budget coolers.

Keyboard - Microsoft Sidewinder X4 - I'm on my PC at night mostly, so illuminated keys are great. Recommended by multiple people

Mouse - Razer Naga Molten Special Edition - I play a ton of games with hot keys. Plus it looks pretty sweet.

Total on PCPartPicker.com is $860. This is basically what my budget is.

Any advice? I already have a monitor and Win 7 Ultimate 64 bit.