Get rid of the computer case, get a milk crate. If you plan to run those GPUs in an enclosed case mining Scrypt, your cards wont last 5 mins.
get rid of the cpu cooler, use the stock one that comes with the CPU.
get rid of that motherboard. its way over priced. find one that's cheaper but that can still accommodate four GPUs.
GET PCI RISERS. powered ones since you are planning to run 4 cards. I run three cards with non powered risers per rig and I am doing fine.
Get rid of the SSD. You can run BAMT off a USB Key. If you are not that good with Linux, then just get any HD thats cheap. You dont need a SSD.
Ohh and I am not a fan of those GPUs. I run MSI Twin Forzrs. Get a gpu with dual fans. depending on the temps you experience, you may need to point a deskfan directly on the GPUs to help with cooling.
THIS IS HOW YOU BUILD A RIG. Thanks to Tacotime for being such a nice guy and showing us how to build a functional rig.
https://bitcointalksearch.org/topic/litecoin-build-for-noobs-3x-7950s-18-mhs-in-a-10-crate-case-163306
I built my first rig for under $2000 CAD. Running rock steady at 1.8mhash since April 2013 mining Scrypt 24/7.
THANK YOU!