New PC Build - First time custom build

Approximate Purchase Date: This weekend

Budget Range: 1800-2000

System Usage from Most to Least Important:Gaming, Running high-intensity computer science algorithms, Video Processing

Parts Not Required:Keyboard, Mouse, Monitor, Speakers, DVD Drive

Preferred Website(s) for Parts: Newegg

Country of Origin: US

Parts Preferences: Indifferent

Overclocking: Yes (on CPU and all GPU's)

SLI or Crossfire: Yes

Monitor Resolution: 1920x1080

Additional Comments:
Hey, first time pc builder here. I've read around the forums for awhile, and I finally decided to register an account and get a few opinions on my build. I'm a Computer Engineering/Science student, and I plan to really put this guy through the ringer. It'll be doing everything from high-end gaming, to high intensity algorithmic calculations, and finally some standard 3D workstation rendering (in that order of importance).

I plan on eventually adding either two more Twin Frozr III's for a triple sli set up, or just one more Twin Frozr and then a workstation graphics card for my video editting purposes. Also, I plan on OCing the CPU and GPU's. Anywho, just wanted to make sure I didn't have any major incompatabilities or significantly better options given my current choices and designs for the pc.

CPU - i7 2600k (320$)
http://www.newegg.com/Product/Prod [...] 6819115070

Mobo - ASRock Z68 Extreme7 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard (270$)
http://www.newegg.com/Product/Prod [...] 6813157269

GPU - MSI N570GTX Twin Frozr III PE/OC GeForce GTX 570 (Fermi) 1280MB 320-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card (370$)
http://www.newegg.com/Product/Prod [...] 0570%20%28

Memory - CORSAIR XMS3 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX8GX3M2B1600C9 (54$)
http://www.newegg.com/Product/Prod [...] 6820233202

HDD-Seagate Barracuda Green ST2000DL003 2TB 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive ($200)
http://www.newegg.com/Product/Prod [...] %20RPM%206

SSD - Kingston HyperX SH100S3/120G 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD) (Stand-alone Drive) ($235)
http://www.newegg.com/Product/Prod [...] SATA%20III

PSU - ABS Majesty series MJ1100-M Continuous 1100W@50°C ATX12V/EPS12V 80 PLUS GOLD Certified, Single 12V Rail, Modular Flat Cable Design, Active-PFC "Compatible with Core i7, i5" Power Supply ($180)
http://www.newegg.com/Product/Prod [...] 6817814019

Cooling - CORSAIR H100 (CWCH100) Extreme Performance Liquid CPU Cooler (120$)
http://www.newegg.com/Product/Prod [...] e%20Liquid

Case - Corsair Carbide Series 400R Graphite grey and black Steel / Plastic ATX Mid Tower Gaming Case (100$)
http://www.newegg.com/Product/Prod [...] grey%20and

OS - Windows 7 Prof & Ubuntu

The build is pretty good. A couple of thoughts, though - mostly just opinions/things to think about.

Three cards will put out a lot of heat which means you've got to carefully pick your case. I will say I don't know a lot about the Carbide. Just looking at it, though, I'm not sure what length of card it will fit because of the orientation of the 3.5" bays so you might want to check on that. Also it's not one of the names that commonly gets talked about in the realm of superior heating although the graphite and obsidian do well, so it may be fine. If I had to recommend a case it would probably be the Silverstone Raven for $150.
http://www.newegg.com/Product/Prod [...] 6811163180

The H100 doesn't really outperform quality air coolers. It's quieter, but far more expensive. The Arctic Cooler Freezer 7 and the CoolerMaster Hyper 212+ are popular choices for under $40.

I've never heard of ABS (your PSU manufacturer). I don't necessarily know anything about them, but I do know that buying a PSU from a quality manufacturer is important in PSU's and that's even more true for PSU's over 1kW. The model you chose is the cheapest 1100W model on newegg and that's not a good sign. I would go with the Corsair HX1050 at least:
http://www.newegg.com/Product/Prod [...] 6817139034

The Crucial M4 is a cheaper SSD and it has a better reputation (in my opinion). I would go with that over the Kingston if it were me.
http://www.newegg.com/Product/Prod [...] 6820148442

You can get away with the ASRock Z68 Extreme4 Gen3 instead of the Extreme7 if you want to save a little money there. The biggest downgrade is x8/x8 from x16/x16 in SLI but as of right now that's not really a performance downgrade.
http://www.newegg.com/Product/Prod [...] 6813157264