Your thoughts on these specs for new game rig...

Thanks in advance, here's my plan: build the best I can for around 2K.
My goal is to make this baby last as long as possible, for core component scalability and growth. 
I would like to get 4-5 years out of the processor, motherboard, and most other components. 
I do not need the ultimate card at this time, as I am stepping out of the stone age from my current GeForce 7800 GTX, and Dell XPS 600 system.

I would like to play at highest resolutions, on my 20 inch LCD display (not widescreen).
Basically, I don't want it to be outdated for the latest games in the next 2-3 years, and would like it to perform "well" for 5 or so - with current titles.
UPDATE: My gaming favorites are Left for Dead (1 and 2), Far Cry (1 and 2), Half Life, Crysis, Fallout 3. I like to play these at the highest resolution possible (obviously).
I also have never depended on the on-board audio, but I hear this EVGA audio is excellent and will provide the atmosphere that I have come to depend on with my old Creative SB Audigy pci sound card.
PLEASE let me know if this will not be the case, from your understanding of the motherboard I selected.


Specifications: 
Chassis Model: Special Deal Hot Seller - HAF 922
Exterior Finish: - Not Available
Trim Accents: - Not Available
Processor: Intel Core i7 920 2.66GHz (Quad Core)
Motherboard: EVGA X58 LE Edition SLI (Intel X58 Chipset) (Supports SLI or CrossFire)
System Memory: 6GB DDR3 1600MHz Corsair Dominator with DHX Extreme Edition
Power Supply: 750W Digital Storm Certified (Dual SLI Compatible) (Silent Edition Recommended) 
Expansion Bay: - Not Available
Hard Drive Set 1: Operating System: 1x (1TB Seagate/Hitachi/Western Digital (7200 RPM) (32MB Cache) (SATA) (Extreme Speed)
Set 1 Raid Options: - Not Available
Hard Drive Set 2: Multimedia\Data: - No Thanks
Hard Drive Set 3: Backup\Misc.: - No Thanks
Optical Drive 1: DVD±R/RW/CD-R/RW (DVD Writer 22x / CD-Writer 48x)
Optical Drive 2: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card: 1x ATI Radeon HD 5850 1GB 
Add-on Card: - No Thanks
Sound Card: Integrated Motherboard Audio
Extreme Cooling: AIR: Stage 1: Cooler Master V8 High Performance Cooler (Compatible With ONLY i7 Processors)
H20 Tube Color:- Not Available
Chassis Airflow: Standard Factory Chassis Fans
Internal Lighting: Internal Chassis Lighting System (Blue)
Enhancements: - Not Available
Chassis Mods: - Not Available
Noise Reduction: - Not Available
Boost Processor: FREE: Stage 1: Overclock the processor between 3.3GHz to 3.9GHz (Requires Air Cooling Upgrade)
Boost Video Card: FREE: Yes, Overclock the video card(s) as much as possible with complete stability
Boost Memory: - Not Available
Boost OS: FREE: Yes, Disable and tweak all of the non-crucial services on the operating system
Windows OS: Microsoft Windows 7 Ultimate (64-Bit Edition)
Restore Kit: Digital Storm Specialized Recovery System (DVD Image Based)
Virus Protection: - Not Available
Office: - Not Available
Benchmarking: - Not Available
Install/Test Game: FREE: Please include a free copy of a hot-selling game
Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: Microsoft Multimedia Desktop 3.0 (Multimedia Keyboard + Optical Wheel Mouse)
Mouse: - No Thanks
External Storage: - No Thanks
Exclusive T-Shirt: FREE: Digital Storm T-Shirt - Black (Large)
Priority Build: - No Thanks, Ship Within 5-10 Business Days After Order Is Successfully Processed
Warranty: 3 Year Platinum Care Extended Parts & Labor Warranty
 

The main reason everyone recommends professional is for the XP mode, which ultimate also has..so either way works on that (however ultimate is $30 more).  Several people here will vouch for the V8 cooler but most will tell you to go with the noctua u12 (listed as the dual 120). 

Thanks for the tip - I have also had good experiences with logitech products.

Motherboard sound question:
Here's a more important configuration question I researched, but would love to hear your opinion:
I have never depended on the on-board audio, but I hear this EVGA audio is excellent and will provide the atmosphere that I have come to depend on with my old Creative SB Audigy pci sound card.
Will this be the case, from your understanding of the motherboard I selected? Sound is so important to gaming.

i have the same evga x58 le motherboard and have never used it's integrated sound, so i'm clueless if it's good or not, but i'm sure it is, regardless.