Latest version of my guide to building and operating a mining rig is here,  How to Build a 6 Rig GPU Miner for Zcash and Ethereum with Nvidia GTX 1070 and EthosDistro posted Oct 1, 2017 on Steemit.
https://steemit.com/cryptocurrency/@blockops/how-to-build-and-run-a-6-gpu-mining-rig-for-zcash-or-ethereum-with-nvidia-gtx-1070