Is my build fully compatible and good enough for 1440p 144Hz gaming on High/Ultra (~3800 USD)?

[Layth Kamal]

http://pcpartpicker.com/p/NKCqD3

Spoiler

CPU: i7-6700K
CPU Cooler : CRYORIG R1 Universal
Motherboard: ASUS MAXIMUS VIII HERO
Memory: Crucial Ballistix Tactical 16GB (2x8GB DDR4-2666)
Storage: 2x Samsung 850 EVO-Series 500GB 2.5" SSDs + Samsung 950 PRO 512GB M.2-2280
Video Cards: 2x Zotac GeForce GTX 980Ti 6GB AMP! Extreme
Case: Cooler Master MasterCase Pro 5
PSU: EVGA SuperNova 1000G2 1000W 80+ Gold
Monitor: Asus ROG SWIFT PG278Q 144Hz 27.0"
Keyboard: Corsair STRAFE Wired Gaming Keyboard
Mouse: ASUS ROG Gladius Wired Optical Mouse

 

[Roti-Kebab]

http://pcpartpicker.com/p/NKCqD3

Spoiler

CPU: i7-6700K
CPU Cooler : CRYORIG R1 Universal
Motherboard: ASUS MAXIMUS VIII HERO
Memory: Crucial Ballistix Tactical 16GB (2x8GB DDR4-2666)
Storage: 2x Samsung 850 EVO-Series 500GB 2.5" SSDs + Samsung 950 PRO 512GB M.2-2280
Video Cards: 2x Zotac GeForce GTX 980Ti 6GB AMP! Extreme
Case: Cooler Master MasterCase Pro 5
PSU: EVGA SuperNova 1000G2 1000W 80+ Gold
Monitor: Asus ROG SWIFT PG278Q 144Hz 27.0"
Keyboard: Corsair STRAFE Wired Gaming Keyboard
Mouse: ASUS ROG Gladius Wired Optical Mouse

The only thing i would suggest you change here is to go for the MSI version of the 980ti, MSI is generally renowned for great overclocks and very stable temperatures. And make sure the monitor has lower than 5ms response time