In my opinion it would be pointless to open a mining business right now. You will need several million dollars in order to compete with mining pools like bit fury or 21 Inc. I would also suggest you to invest in a mining equipment lab, you will need the most advances miners to be ahead of your competition.
Uhh the OP isn't asking how to compete with the dominant mining pools, they're asking for guidance and advice, and mining with free electricity is far from "pointless".