Most rendering programs do not support dual GPUs. I would get a single card, if I were you, but not a Quadro. Firepros destroy the Quadros at the same price range. Look into the Firepor V7900; amazing rendering card for the price.
Don't use an H100i; get solid air cooler, and you'll be great for overclocking and noise. Noctua and Phanteks both have a great line of products to choose from.
If you are doing any real rendering, get the 3930k. More cores means more rendering in less time.
I would get the P9X79 WS instead of the Sabertooth. Better feature set for what you need, plus sexier color scheme.
Smaller PSU! You want power efficiency for an appropriately sized rig that will run almost 24/7. Seasonic G 450 is a great choice for a single professional card and 3930k. Way more than enough wattage for ideal efficiency.
Better RAM! Get some really low CL memory, like a kit of 1600mHz CL6 off of Ebay. You want a CL of 8 max at this budget and level of rendering performance.