I think it could work well. It would be close to power and shaded during the summer. Just need to figure out cooling and heating. Humidifyer would have to be commercial with a controller. I think it would have to be pretty much automated. I'll have to throw a lot of planning and thought into the whole aspect. Legalization would make things a bit more simple and an easier choice to make.
If we were legal, I think I'd just build a room in my shop. That still may happen, but that's a big commitment. I think it's no more of a risk than the current situation and less than the trailer with no compromises I'd have to make with the trailer.
All much more of a commitment.