[elhigh]

With such easy access to so much flammable waste as fuel, I wonder if you wouldn't do well to build a waste fuel boiler?

I see designs for waste oil burners that could easily be adapted to water heating, I wonder if you could do similar with a water circulation loop feeding some boilers inside the house.

I only say this because I saw you mention 10 55-gal drums of waste solvent earlier and my eyes got kind of shiny, thinking about an awful lot of free heat. 550 gallons of fuel would take me right through winter and probably be a good start on the next season too.