LOL..Did you make this illustration?

It'd be have to be a lot of biogas and a lot of cows for a profitable farm. On top of that you need significant investments for the mining gear itself.

You have the land so space won't be an issue depending on how accessible is broadband in your area. Yet, these are mostly pie-in-the-sky ideas. The devil is in the details and so are the complications.

It has been almost two years since OP posted this idea and that "detailed" illustration of the masterplan. I wonder what has become of this idea in the times of "yield farms" on DeFi. If anything, the OP can at least claim ownership to the idea of a cryptocurrency farm which are ubiquitous now in the times of DeFi.