Western Digital 1tb My Dvr Expander Buying A Gaming PC (Specs Included)?

Buying a Gaming PC (Specs Included)? - western digital 1tb my dvr expander

Hello, I have more time to build a new team and demanded the return of all parts of my back, a real pain in the neck, I decided that I should buy a custom built PC. Here are the specifications:

Re: HAF 932
CPU i7 920 (overclocked to 3.75hz)
Motherboard: EVGA X58M
Power Supply: 700W SLI-ready (silent installation)
RAM: 6GB Corsair 1600Mhz or DDR3 Mushkin
HDD: Western Digital 1TB 7200RPM SATA 32MB Cache
Optical Drive: DVR / RW / CD-R / RW (DVD-20x/CD-Writer Writer 48x)
GPU: 2x GTX 275 SLI 892MB
Sound Card: 7.1 24-bit/192kHz DecodingHighDefinitionIntegratedAudio
Cooling: Asetek Liquid Cooling Case Fans + Standard
OS: Windows Vista Home Premium 64-bit (Windows 7 Free Upgrade Coupon)
Warranty: 2 years Parts & Labor Extended Warranty
PRICE: $ 1886

Is it worth it? Not able to change the parts in any case, since it is a pre-compiled.
And I am thinking about purchasing a monitor with the following specifications:
Screen Size - 23
Resolution - 2048 x 1152
Brightness - 300 cd
Contrast ratio - 20000 - 1 (DC)
Response time - 5

The equipment is a treaty of Nice? And the monitor is good enough?