All of the selections look appropriate to me; don't change a thing.
1) I suggest you add an aftermarket cpu cooler. It will keep your cpu quieter and cooler. If you oc a bit(and that's why you bought a "K") you can oc easier and higher. One need not be expensive. A Xigmatek gaia or cm hyper 212 will be about $30. Also, their backplane mount is mech easier than the Intel pushpins to mount, particularly for a first time builder.
2) You need a power supply. A GTX580 needs a quality 600w psu with 42 +12v amps at least. My short list of quality psu's would include Seasonic, PC P&C, XFX, Corsair and Antec.
This PC P&C 650w unit is $70 after rebate, it is silver certified efficiency: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
3) If you can find room in your budget, get a ssd for the os and some apps. Use the 1tb drive for backup and overflow.
A 60-120gb ssd would be fine. Intel and samsung seem to be the most reliable today.
4) Go to a local store and check out the keyboards and mice. They need to fit your hand and eye.
5) Take the time now to download and read the case and motherboard manuals. Cover to cover. Many questions will be answered.
Yeah that build looks great, most of the new mobos can OC your CPU and components to run at stable temps and with the 580 you will be happy at that res with all games for a long time. . . . DX12 may change that but with all games being ported to consoles I wouldnt worry.
Thanks guys. I changed and added the following. Let me know what you think.
Changed the case to: COOLER MASTER Storm Enforcer SGC-1000-KWN1 Black SECC / ABS Plastic ATX Mid Tower Computer Case ATX PS2 / EPS 12V
Power Supply?: Mixed between the CORSAIR Professional Series HX850 and the GTX580 you mentioned.
CPU Cooler: COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler
SSD: What are the benefits of them? Didn't really research anything about them yet. Also, how are they to install for a newbie?
A SSD is 50x faster in random I/O vs. a hard drive, and 2-3x faster in sequential.
Everything you do will seem much quicker. The only negative is their cost per gb; expect $1.5 to $2 per gb.
They are sata drives, and install just like any other sata drive. They perform better if you specify the sata mode as AHCI vs. ide or raid.