Decent and Compatible ~$600-$800 Gaming/Office Build?

Hello,

First of all, thank you for taking the time to take a look at this. I built my current computer in 2009, and the HDD on it has started to fail, so I decided I'd like to start fresh with a new computer. When I built the computer, I had a lot of help from a friend, so I'm not the best at cross-checking compatibility.


GOAL: I'm aiming for a ~$600-$800, well performing, reliable gaming rig. Something that can play most games on High or sometimes Max settings (no games with insane requirements like Crysis 2 on max settings). Of course, if I can get something that performs well and is under $700 or $800, that would be great too. I will also be using this computer for office tasks.


Approximate Purchase Date: ASAP

Budget Range: ~$600- upper $800

System Usage from Most to Least Important: Gaming, Surfing the Internet/Streaming HD, Office/School tasks

Are you buying a monitor: No

Do you need to buy OS: Yes

Preferred Website(s) for Parts: newegg

Overclocking: Maybe

SLI or Crossfire: No

Your Monitor Resolution: 1024x768 and above



PARTS:

CPU: Intel Core i5-3470 Ivy Bridge 3.2GHz (3.6GHz Turbo Boost)
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115234

CPU Cooler: COOLER MASTER Hyper 212 Plus
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065

Motherboard: ASUS P8Z77-V LK LGA 1155 Intel Z77
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131837

Memory: Team Vulcan 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820313355

Storage: Seagate SV35 Series ST1000VX000 1TB 7200 RPM 64MB Cache
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148912

Video Card: GIGABYTE GV-N660OC-2GD GeForce GTX 660 2GB 192-bit GDDR5 PCI Express 3.0 x16
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125443

Case: (NOTE: I was planning to use the Antec Three Hundred V1 case, but it seems it would only be able to put out USB 2.0 in the front panel, something I don't mind. Is it compatible otherwise??)

Power Supply: (NOTE: I wanted to use my currently owned power supply. Is this compatible?
Antec NeoPower 650 Blue 650W ATX12V / EPS12V 100-240W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371010)

Optical: (NOTE: I'm planning to use my current optical drive. Is this compatible? LITE-ON 20X DVD±R DVD Burner Black SATA Model iHAS120-04
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106263)

Operating System: Windows 7 64-Bit

Thanks for your advice!