I would make several changes on such an expensive build.
Broadwell for desktops could be as late as Q2 of next year. Only Broadwell they have really announced are the Y series for tablets and ultrabooks.
Maxwell GTX880 probably won't be faster then the 780Ti, but it may drive prices lower. (Planning on one or two myself, not sure yet)
Over spending on memory unless you plan to really overclock it. In which case, just buy faster ram in all honesty.
Still needs a case:
PCPartPicker part list:
http://pcpartpicker.com/p/z2xzXL
Price breakdown by merchant: http://pcpartpicker.com/p/z2xzXL/by_merchant/
CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($329.98 @ SuperBiiz)
CPU Cooler: Phanteks PH-TC14PE_BK 78.1 CFM CPU Cooler ($64.99 @ Newegg)
Motherboard: Asus MAXIMUS VII HERO ATX LGA1150 Motherboard ($199.99 @ NCIX US)
Memory: Corsair Vengeance Pro 16GB (2 x 8GB) DDR3-2400 Memory ($162.99 @ Newegg)
Storage: Samsung 850 Pro Series 256GB 2.5" Solid State Drive ($187.98 @ Newegg)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($83.49 @ OutletPC)
Video Card: Asus GeForce GTX 780 Ti 3GB DirectCU II Video Card ($599.99 @ NCIX US)
Power Supply: XFX ProSeries 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ NCIX US)
Total: $1749.40
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-27 16:30 EDT-0400