Not a huge fan of ripjaws but the other lower profile memory was at least another $100 if not closer to $200 more.
So you could do this a few different ways. If you decide on the 5930K, then you could up the mobo to a ROG board, the Rampage V extreme for around $130 more.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132505
You could also downgrade the mobo by a $100 or so and do the 5960x but the 5830K is pretty powerful overclocked.
I would go with the Enthoo Primo, even though it's $100 or so more, it is much bigger and has huge amounts of room for water cooling. 4 120 mm up top, so you can mount a 280 mm h110i GT or the 240 mm h100I GTX , in addition to being able to mount one of the sli hybrid rads up top, and you might be able to fit both of them up top. The 5.25" bays, it has 5 of them and you could mount one dvd/blueray burner on the lower and use the space up top to try and fit the other 980ti rad.
If that wont work, the other one you will have to mount in the front of the case if you go with a larger 240 or 280 for your processor, the upper portion and then take out the fan it comes with and add a 140MM in the front. It has room for another fan in the back at the bottom, in addition to the 140mm it already has as exhaust in the back up top, plus plenty of room for fans or radiators on the bottom.
You could also go down to a Corsair H80 I GT, which is only a 120MM rad and will allow you much more room to work with the sli rads of the 980 ti, even in the enthoo pro maybe but I still think the lPrimo is the better case. Here's a review on the Primo too, it's a super nice case.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835181089 -----corsair H80 I GT
https://www.youtube.com/watch?v=CWttZcWWF9Y ------Enthoo Primo review
http://pcpartpicker.com/p/fxpwvK -----Parts list-----
CPU: Intel Core i7-5930K 3.5GHz 6-Core Processor $559.98
CPU Cooler: Corsair H100i GTX 70.7 CFM Liquid CPU Cooler $99.99
Motherboard: Asus X99-DELUXE/U3.1 ATX LGA2011-3 Motherboard $389.99
Memory: G.Skill Ripjaws 4 series 64GB (8 x 8GB) DDR4-2666 Memory $529.99
Case: Phanteks Enthoo Primo ATX Full Tower Case $234.99
Total: $1815.00