I have basiclly that same mill. A Jet JVM-830.
When i bought it the seller loaded it with a bobcat with forks. I had him take the head off and set it next to the base on the trailer.
When i got it home i just used an engine hoist to pick it off the trailer and re-assemble.
Pieces of pipe and...
I had that exact heater in my 720sq ft x 10' ceiling garage here in Iowa.
Finished and insulated r13 walls and about r25 ceiling insulation.
I used a torpedo style heater to get the garage up to temp then used the elec to maintain temp.
It would take the elec heater hours to warm it up...