Sheeesh! That's a small plot....There's places that I won't ride armed with 10 friends...
Our friends picked up an ex hydroponics operation in BC, the entire operation is underground, grow op, generator, heat exchanger, everything excluding the house. There is a ~75x75 shop on the property with a concrete bunker the same size under it.
They now use it as a mini storage, the property is ~12 acres IIRC out in the middle of a provincial park.
Meth-heads???
I don't know what county you're in, but whatever happened to the sheriff forming a posse and going after a$$holes like that?