Seeking for advice, $2500 crossfire gaming rig

Hello! This is Stark. I posted a question seeking for advice just yesterday, but i believe i rushed since i didn't know what i really wanted. I am looking forward to build my first gaming pc and i just wanted to double check the quality and the compatibility of the parts that i've chosen, i would like some opinions from you guys and also advice on which parts should i go with!`Jbakerlent thanks for your help yesterday. So with nothing more to say here we go.

Corsair Obsidian Series 800D
http://www.newegg.com/Product/Prod [...] 6811139001

GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
http://www.newegg.com/Product/Prod [...] 6813128423

(X2) XFX HD-587A-ZND9 Radeon HD 5870 (Cypress XT) 1GB XXX Edition 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card
http://www.newegg.com/Product/Prod [...] 6814150456

CORSAIR HX Series CMPSU-750HX 750W ATX12V
http://www.newegg.com/Product/Prod [...] 6817139010

Intel Core i7-920 Bloomfield
http://www.newegg.com/Product/Prod [...] 6819115202

OCZ Gold 6GB
http://www.newegg.com/Product/Prod [...] 6820227365

OCZ Agility 2 OCZSSD2-2AGT50G 2.5" 50GB SATA II MLC Internal Solid State Drive (SSD)
http://www.newegg.com/Product/Prod [...] 6820227531

SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Prod [...] 6822152185

SAMSUNG P2050 Rose Black 20" 2ms(GTG) Widescreen LCD Monitor 300 cd/m2 DC 50000:1(1000:1)
http://www.newegg.com/Product/Prod [...] 6824001375

PLANTRONICS GameCom 367 Closed-ear 3.5mm Circumaural Stereo Headset
http://www.newegg.com/Product/Prod [...] 6826265064

Sony Optiarc Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA DVD/CD Rewritable Drive - OEM
http://www.newegg.com/Product/Prod [...] 6827118030

CORSAIR Cooling Hydro Series CWCH50-1 120mm High Performance CPU Cooler
http://www.newegg.com/Product/Prod [...] 6835181010

Rosewill RTK-045 45 Piece Premium Computer Tool Kit
http://www.newegg.com/Product/Prod [...] 6899261003

Rosewill RCT8B-100 Black 8" Cable Tie
http://www.newegg.com/Product/Prod [...] 6899997048

HIS CrossFire Bridge Interconnect Cable Model HCFBC4065
http://www.newegg.com/Product/Prod [...] 6814999002

Those are the items i have chosen thus far. I am most worried about parts compatibility and "bottleneckings". I am still not sure if i should go with either 2 ati HD radeon 5770 or 2 5870s, i want to max out any game i play on a 20"monitor, if 2 5870s are overkill and just a plain "waste of money" ill get 2 5770s. By the way, i am planning to overclock my cpu to about 3.5 GHz that's why i am going with that cpu watercooling kit. Well thanks for your time and waiting for your answers.

Note: I am only choosing either 2 XFX 5870s or 2 XFX 5770s for this build. (the total cost of the parts i've chosen is about $2600 usd).

Hey Stark. Your build looks pretty good. We've been getting a few complaints about the UD3R, but it may just be isolated instances, the Asus P6X58D-E is another option. Also, I wouldn't get two 5870s for anything but an Eyefinity setup, for your resolution, I'd recommend a single 5850. Then I recommend Mushkin Enhanced Blackline over the Golds because the Golds have also been having some issues. Some small notes, you won't need a crossfire bridge it comes with the parts and for tools you'll just need a phillips head and a flashlight. You should be able to reach 3.5GHz on just air cooling from the Hyper+.

If you want that much graphical horsepower, maybe a 5970? The graphics cards themselves should come with a crossfire bridge. I would skip the Dominators unless you're doing a huge overclock, and I'd probably get CL6 instead if I was going to spend that much. The Hyper is quite good, but maybe the Xigmatek HDT-S1283?
http://www.frostytech.com/articlev [...] 419&page=5