If you really want to have an extreme rig. I dont think it is a good idea to go for 4gb VRAM options and also a tri 1080p monitor only. Best to go for something more harder to drive and deserves to be in extreme setup components.
Such as tri 1440p display. And you wont need 2 x Samsung SSD to run at RAID 0 causing risk on your OS partition. Even if it is fast, you cant tell the difference. If you really want 2, it is better to run on RAID 1 instead to make sure there is a back up. At least you will know that if 1 is dead, your PC is still alive and running.
My recommendations:
ASUS X99 Deluxe + i7-5930K ~ $1316
GSkills Ripjaws 4 3200mhz 4x4GB x2 (32gb) 16-16-16-36 - $1618
WD Purple 4tb x2 ~ $462 RAID 1
Samsung 850 1tb Pro x2 ~ $1990 RAID 1
Palit 6gb Titan Black x3 3 way SLI ~ $4275
Corsair AX1500i 1500W 80+ Titanium Fully Modular PSU ~ $592
Asus Internal 12x Blu-ray Writer (BW-12B1ST) ~ $169
Asus PG278Q 27inch TN Panel 144hz Gsync Monitor x3 ~ $3777
Total ~ $14199.
Does not include custom water cooling. Will see what you really need for custom WC and will post again.