almost affordable configuration with questions

406908
Total Price with Instant Savings: $1,200.00

Specifications:
Chassis Model: Special Deal Hot Seller - Cooler Master CM Storm Scout
Exterior Finish: - Not Available
Trim Accents: - Not Available
Processor: Intel Core i5 750 2.66GHz (Quad Core)
Motherboard: EVGA P55M SLI (Intel P55 Chipset)
System Memory: 4GB DDR3 1600MHz Digital Storm Certified Performance Series (Highly Recommended) (Hand Tested)
Power Supply: 750W Digital Storm Certified (Dual SLI Compatible) (Silent Edition Recommended)
Expansion Bay: - Not Available
Hard Drive Set 1: Operating System: 1x (500GB Western Digital (16MB Cache) (7200 RPM) (SATA)
Set 1 Raid Options: - No Thanks
Hard Drive Set 2: Multimedia\Data: - No Thanks
Hard Drive Set 3: Backup\Misc.: - No Thanks
Optical Drive 1: DVD\261R/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 5770 1GB
Add-on Card: - No Thanks
Sound Card: Integrated Motherboard Audio
Extreme Cooling: AIR: Stage 1: High Performance Cooler (Compatible With ONLY i5/AMD Processors)
H20 Tube Color:- Not Available
Chassis Airflow: Standard Factory Chassis Fans
Internal Lighting: - No Thanks
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 (Cooling Upgrade Recommended)
Boost Video Card: - Not Available
Boost Memory: - Not Available
Boost OS: - Not Available
Windows OS: Microsoft Windows 7 Home Premium (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: - No Thanks
Mouse: - No Thanks
External Storage: - No Thanks
Exclusive T-Shirt: FREE: Digital Storm T-Shirt
Priority Build: - No Thanks, Ship Within 5-15 Business Days After Order Is Successfully Processed
Warranty: 3 Year Limited Warranty with Life-Time Customer Support

My Monitor is 20 inch wide screen at 1680x1050 used for wow and lotr online games.

I was happy with current computer that has intel Q9300 Quad 2.5 and nvidia 250 video card. Problem is it crashes and often have to jiggle the video card to make it work.

Questions.
1. the P55M SLI motherboard. Will it do the job?
2. I am considering upgrading in a few years to crossfired Ati 5770 cards. Will digital storm do that upgrade in their free labor upgrade center?
3. Will the DS warranty install any bad parts for the 3 years free of labor charges if I ship the computer to them? Will they pay the return shipping charges? I can slide the side off and blow air and jiggle the video card and thats about it.
4. How are the dust filters inside that scout case cleaned? How do I get to the filter on the bottom thats under the power supply to clean it?
5. Will DS send me the windows 7 install disk with the computer?

I know there are better configurations but I can not afford them. Have to borrow for this one.
I went for the scout case because it has dust filters and looks good and will fit on the desk.
DS lists the video card as more important than cpu so getting best card I can afford now. I do not expect these DS prices to last long.

Any suggestions or comments welcome.

You guys are great.