I live in middle of no where but there are farms and ranches near by so cause of this they offer FREE!!! 100% FREE FROM 9 PM TO 6 AM electricity!!!

I want to take advantage of this and kinda at crossroads.

My set up for where units would go is on a 6 shelf wire cabinet,4 separate 8 port switches, 2 power outlets but are on the same power line, and a voltage regulator.

Should i buy lets say 1 antminer s7 or like a ton of some other small one?
or should i even still bother?