You have a major over kill there, a 19" monitor has a really low resolution, why would you spend so much on the x58 platform, go i5 you dont need more than that for gaming.
first off whats your budget?
then, over clocking DOESN'T HURT ANYTHING, the only thing hurt is your wallet if you don't over clock.
if world of Warcraft is the most demanding game you planning on playing then the 5770 isn't bad choice, but i would go with a 5850 and a 24" monitor.
A config like this:
Intel Build
CPU & Mobo : 1. Intel BX80605I5750: $199.99
2. ASUS P7P55D PRO: $169.99
Combo Discount: -$20.00
Combo Price: $349.98
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
HTF: COOLER MASTER Hyper 212 Plus
$34.99
$7.56 Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
RAM: G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
$114.99
Free Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
GPU: SAPPHIRE 100282-3SR Radeon HD 5850 (Cypress Pro) 1GB 256-bit DDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity - Retail
Original Price: $329.99
You Save: $30.00
$299.99
$7.87 Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
HDD: Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
$89.99
Free Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Case & PSU: 1. Antec Three Hundred Illusi: $69.99
2. Antec EA650: $74.99
Combo Discount: -$20.00
Combo Price: $124.98
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
DVD: LG Black 24X DVD+R 8X DVD+RW 16X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM SATA DVD Burner - Bulk - OEM
$24.99
Free Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Monitor: Hanns·G HH-251HPB Black 24.6" 2ms HDMI Widescreen LCD Monitor 300 cd/m2 DC 15000:1(800:1) Built-in Speakers - Retail
Original Price: $239.99
You Save: $40.00
$199.99
Free Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Grand Total: $1,250.00
or the AMD version:
basically the same thing with 2 changes
CPU & Mobo: 1. GIGABYTE GA-890GPA-UD3H: $139.99
2. AMD HDZ955FBGMBOX: $159.99
Combo Discount: -$20.00
Combo Price: $279.98
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
GPU: VisionTek 900298 Radeon HD 5870 (Cypress XT) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card w/ATI Eyefinity - Retail
Original Price: $409.99
You Save: $15.00
$394.99
Free Shipping*
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Grand Total: $1,272.46
those are more gaming oriented builds, as you can see now days, Processors aren't a muscle needed to drive a game, which is why you better off putting the money on the video card rather than a expensive CPU