I appreciate all the input. My building is wood with a metal roof. I have a 25 foot i-beam I haven't installed yet, but that is an interesting idea. I too have an issue getting up some times, but the way I suspect I would often use a lift, I think wouldn't work with a four post. Such as lifting the body off a vehicle.

1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.