Few changes and you can get a better and still cheap 1400$ 2070 RTX Gaming rig.
PCPartPicker part list:
https://pcpartpicker.com/list/GfXy7W
Price breakdown by merchant: https://pcpartpicker.com/list/GfXy7W/by_merchant/
CPU: AMD - Ryzen 7 1700 3 GHz 8-Core Processor ($179.99 @ SuperBiiz)
Motherboard: ASRock - B450M PRO4 Micro ATX AM4 Motherboard ($79.62 @ OutletPC)
Memory: ADATA - XPG GAMMIX D10 16 GB (2 x 8 GB) DDR4-3000 Memory ($104.99 @ Newegg Business)
Storage: Samsung - 860 Evo 500 GB 2.5" Solid State Drive ($72.99 @ Amazon)
Video Card: Gigabyte - GeForce RTX 2070 8 GB WINDFORCE Video Card ($498.99 @ SuperBiiz)
Case: Corsair - 270R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: Corsair - RMx (2018) 750 W 80+ Gold Certified Fully-Modular ATX Power Supply ($69.99 @ Newegg)
Monitor: Acer - XB241H bmipr 24.0" 1920x1080 180 Hz Monitor ($346.47 @ B&H)
Total: $1403.03
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-12-03 22:04 EST-0500
You dont need OS license, you can either run with the watermark or buy a cheap online key legaly for 25$.