I am limited on floor area, so looking at a double story or extra high mezzanine. I was thinking that I would have a trap door arrangement through the mezzanine with a chain hoist to allow items to go up through the floor if needed as well as to allow engines and the like to be lifted out. Well that is the dream at this point. Since the span is not that great it should be easy enough to accommodate. Might even be able to do it with a jib crane/sky hook type thing. Not sure what load you can get those things up to.