Im not sure how practical it is to have the kiln on site. IT d be a safety hazard, as for ceramics and pottery the kiln has to run for several days at different stages. Leaving something with hazardous heat un-attended for days i think is an issue.
Having the pottery and ceramic work area i don’t think would be problematic, just a matter of space. I think it’d be best to just forward people to the Armadillo Clay place to do the firing for them.
Alot of the electric kilns are fairly small, maybe able to handle something the size of a large coffee mug but that’s about it, and aren’t great for melting metals.
[ as a side note I do have a aluminum smelting furnace that runs on charcoal/ propane, and alot of the supplies there for if people would be interested in it]