I echo Wolf.
Maybe go to the next gen so you are ready to upgrade when the next gen of GPU's release, and prices for GPU's come back to normal. And a better PSU.
PCPartPicker part list:
https://pcpartpicker.com/list/j4VYPs
Price breakdown by merchant: https://pcpartpicker.com/list/j4VYPs/by_merchant/
CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($339.00 @ Amazon)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($108.83 @ OutletPC)
Motherboard: MSI - Z370-A PRO ATX LGA1151 Motherboard ($115.99 @ Newegg Marketplace)
Power Supply: Corsair - RMx 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($99.98 @ Amazon)
Total: $663.80
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-02-20 07:12 EST-0500
This should keep your Build going for quite some time. Use the same RAM you have right now to save costs.