Need some advice on this build

Decided that instead of buying a gaming pc from a company, I thought I'd check out the total cost if I took the components that I wanted and find their prices outside of a gaming pc comany's website. Here are the specs that I researched. Just note one thing beforehand, price isn't a huge factor to me, but if I'm doing something completely ridiculous, please inform me. And remember, I'm a total newbie when it comes to this, please don't go crazy. However, just because I'm a newb, doesn't mean I'm a complete idiot. K?

Specs:
1. Intel Core i7-990X Extreme Edition Processor
2. Asus Rampage III Black Edition Socket 1366/ Intel X58/ 3-Way SLI & CrossFireX/ SATA3&USB3.0/ A&GbE/ EATX Motherboard
3. 1.5 Kilowatt Silverstone Strider Sleeved
4. Dual XFX Radeon HD 6990 4GB DDR5
5. HyperX 24GB 1600 MHz DDR3 Non-ECC CL9 DIMM Desktop Memory XMP T1 Black Series Hexa-Channel Kit (PC3 12800) 240-Pin SDRAM KHX1600C9D3T1BK6/24GX
6. 512GB Crucial m4 2.5-inch SATA 6GB/s for hard drive 1
7. **3** 600GB Western Digital VelociRaptor - SATA-III, 6Gb/s, 10,000RPM, 32MB Cache HDD (3 of them, for four hard drives total)
(please tell me if I'm missing something.

Other stuff:
1. 1.5 Kilowatt Silverstone Strider Sleeved
2. 5. 40-in-1 media card reader
3. 9. Intel RAID - RT3WB080 Storage Controller
4. 12X Blu-ray Disc (BD) Burner (Reads and Writes to DVD/CD/BD)
5. ASUS Xonar Xense Premium Gaming Audio 118DB SNR PCI-E1 Soundcard W/ Sennheiser PC 350 Headset

Those are the specs I looked up. The total cost would be about 6 grand (no case, no mouse, no keyboard, no fans, no cooling system, and no monitor YET). On Origin it would be around 9 grand (3 grand savings yay!) and the best specs that I could customize for the V3 Convoy equalled out to be about 7 grand even though most specs were inferior to my build besides probably the hard drive areas (which I assume is less important when it comes to gaming right?). As for alienware, uh... nevermind.
I know i'm missing some stuff but bare with me.

So, my questions are:
1. What type of case should I get? Built in Water Cooling system or no? Link? Cost?
2. What type of fans should I get/would be best for this build?
3. Is this build even stable? Will it work/fit into a case? Or should I make something like a workstation?
4. Most importantly (hehheheh), if this build were made a reality, how good would it be for gaming?

This is my first time ever discussing something like this, please excuse me for that, any help would be appreciated.