Most economical setup needed to produce crude

Another consideration is if this needs to have the fire marshal signed off on it too.

For super budget and not permitted you could get a bunch of washing machines and a team of people dunking 2lbs at a time in 5 gal bubble bags in buckets.

I imagine you could do 10k lbs a week like that.

This might not be realistic for how much you have though, I imagine you have around 100k lbs from 50 acres right?

Then you could get a bunch of 50l rotos like this one, this model is only $4450 plus shipping.

For the chillers two of these window acs converted to chillers using large coolers and 50/50 auto antifreeze/distilled water with eco plus submersible pump would work for a dual coil 50l roto. I just use one with my 20l roto.