It looks good, only as you don't need 850W PS for one GTX 1060, you can go for EVGA 650W P2 (is US$30 cheaper than 850 G2), and with that difference, you can go for EVGA GTX 1060 6GB SSC GPU.
EVGA SuperNOVA 650 P2 220-P2-0650-X1 80+ PLATINUM 650W Fully Modular EVGA ECO Mode Includes FREE Power On Self Tester Power Supply-Newegg.com
EVGA GeForce GTX 1060 6GB SSC GAMING ACX 3.0, 6GB GDDR5, LED, DX12 OSD Support (PXOC), 06G-P4-6267-KR-Newegg.com
PS. to PureOC.