First Gaming build - help

So recently I decided that it is about time for me to build a new desktop and I just need some advice. This computer is going to be mainly used for gaming (skyrim, sims 3, diablo 3, etc.) and coding (just declared as a CS major ). I plan on running the computer on two 19 inch monitors (but will hopefully buy another 23" in the near future). I will also overclock everything. I'm trying to keep it as close to $1200 as possible. After a good weeks worth of research and price checking this is what I have come up with:

Case Corsair Carbide Series 300R Black Steel / Plastic ATX Mid Tower Computer Case 59.99
Fans Scythe SY1225SL12L 120mm "Slipstream" Case Fan 32.97 (3 of them)
Motherboard P8Z77-V LK LGA 1155 Z77 ATX Intel Motherboard 159.99 (with insurance)
Graphics Card SAPPHIRE Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP(11200-00-20G) 263.99 (with insurance)
Power Source Unit SILVERSTONE ST50F-ES 500W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply 49.99
CPU Core i7 3770k 3.5GHz LGA 1155 Processor 289.99
Memory (Ram) G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 94.99
Hard Drive Seagate Barracuda 7200 1 TB 7200RPM SATA 6 Gb/s NCQ 64MB Cache 3.5-Inch Internal Bare Drive ST1000DM003 84.98
CD/DVD Burner LG DVD Burner 24X DVD+R 8X DVD+RW 8X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X 17.99
HSF COOLER MASTER Hyper 212 Plus 14.99
Keyboard and mouse Mircrosoft Wireless Desktop 2000 31.49
SSD Corsair Force Series GT CSSD-F120GBGT-BK 2.5" 120GB SATA III Internal Solid State Drive (SSD) 89.99
Speakers Logitech X-140 2.0 Speakers 24.61

So I have a couple questions:

1) Are all the Parts compatible? (pretty sure they are but just checking lol)?
2) Is there anything that you think I should change about the build?
3) Are there any (cheap) tricks to making my computer quieter?
4) Do you know of anywhere that I can buy the parts for cheaper?
5) Any general advice or warnings will be highly appreciated

Thanks for all the help in advance.

Thanks for the advice. Definetly going to get the 3570k and the asrock z77 extreme4.
Do you think I should try to upgrade my dcs burner to a blue-ray burner or upgrade my graphics card with the extra 100 bucks I'm saving?
If you think I should upgrade my graphics card what should I upgrade to?

those 4 graphics cards are a bit out of my price range but I am thinking of getting the 7950. Do you think its a better idea?
And I do have windows 7 so its not an issue.

Sorry looked over that one for a sec lol.

Do you think I need to get an aftermarket cooler if i want to overclock the 7950?

This is what I'm looking at getting:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127667

Cool thanks for the help everyone