is my current build ok for 4k gaming and does my power supply ok for another evga geforce gtx 980 sc in the future

blackgear09

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Mar 13, 2015
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CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor
CPU Cooler: Swiftech H220-X 55.0 CFM Liquid CPU Cooler
Motherboard: MSI Z97-GAMING 7 ATX LGA1150 Motherboard
Memory: Corsair Vengeance Pro 16GB (2 x 8GB) DDR3-1866 Memory
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: EVGA GeForce GTX 980 4GB Superclocked ACX 2.0 Video Card
Case: NZXT H440 Designed by Razer™ ATX Mid Tower Case
Power Supply: Corsair RM 750W 80+ Gold Certified Fully-Modular ATX Power Supply

and i have the Asus PB287Q as the monitor