I think you slightly misunderstood me and its my fault as I didn't make it clear. Get the 2 of the above mentioned patriot SSD's and use raid0 to combine them. Then get a 1.5tb seagate for your storage I would partition it into 2 sections one 500gb and one 1tb. Move your default windows files like software install paths, paging file and user account paths to the 500gb partition, use the 1tb for general storage.
You will need to use a 2.5" to 3.5" bay adapter the one on newegg seems expensive for basically a bit of punched steel so I would go to a local store and have a look most stores should have them. The adapter is needed to mount the SSD drives in a standard desktop hdd mount which is 3.5".
Tri-sli gtx 285's will outperform quad sli gtx295's because the core speeds are faster on the gtx285's and the price difference is negligible. If your going to go down the tri or quad sli route then you will need a slightly more powerful psu so that you can power everything including your watercooling loop. Newegg.com - SILVERSTONE ST1000 1000W ATX12V / EPS12V SLI Ready CrossFire Ready Modular Active PFC Power Supply - Power Supplies
Make sure you plug the floppy connector into the asus xonar its repeated 30 odd times and comes up with a warning message if you haven't. The Xonar also uses led's to colour code the ports purple one is black which is sub and centre