So as the title says...I was thinking about building a mining rig for a while now and i had planned to get 13x gtx 1050ti 4gb cause I will get AsRock H10 pro btc+ motherboard, and cause of the price for which I can get them in my country and electricity cost.  1060 3gb is almost 3x the price (around 2.7x) and 1070 is even more,but now i have the opportunity to get free electricity so I was wondering if mybe i can get more hash power out of lets say 7x 1060 or 5x 1070 or any AMD RX gpu for the same price of 13 1050 which would be around 2500$ in my country.I will buy a 1200W psu so Im covered there.I was planing to mine ETH at the start until in goes to POS and then ZCash,Monero etc.I am open to any and all suggestions