Indeed, that would all work just fine. But, you could probably do a bit better with that budget.
The only problem I see is that you are using a green drive as your primary storage. You'll be disappointed in the performance of that drive, and you'll also be waiting all the time for the drive to spin up because it sleeps so aggressively. Get yourself a black drive - it's worth the extra money.
I rather like the look of the current case but I mean other wise like is the mother board really the one I need.
A pair of GTX 580s will pull about 450W max while gaming, but can pull up to 625W under full load, and that's just the two cards. So I usually recommend an 850W PSU if you are really planning to SLI. On the other hand, if you are not planning to SLI a good 650W would do fine. The TX750 V2 is an excellent PSU, but it's more suited for GTX 570 SLI or GTX 560ti SLI. Or 6970 crossfire.
And you will want a cooler for overclocking. CM Hyper 212+ would be one.
The MB id s good one. No need to change it. It has a good balanced set of features.
Ok I made all the changes you guys recommended. The price went up a bit but that's understandable.
NZXT Phantom PHAN-001WT White Steel / Plastic Enthusiast ATX Full Tower Computer Case
Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
ASUS VH242H Black 23.6" 5ms HDMI Full 1080P Widescreen LCD Monitor W/Speakers
EVGA 015-P3-1580-AR GeForce GTX 580 (Fermi) 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
CORSAIR Enthusiast Series CMPSU-850TX 850W ATX12V v2.2 / EPS12V v2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active ...
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBRL
ASUS P8Z68-V PRO LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS