Just a comment. I have an 8" indexing super spacer which nearly always has an 8" 3 jaw chuck installed. It lives on a cart near the mill. It is flat out too heavy for me to lift, so I normally pull the 3 SHCS and remove the chuck. Then I can lift the indexer onto the mill table. Then I reinstall the chuck.
I built a 1 ton gantry for my shop driveway. I have a Jet 600 lb hydraulic lift cart. I don't do import engine hoists any more. I have a 2 ton Ruger shop crane with 2-speed hydraulics and straddle legs. This crane was sold to the US Navy in 1988. I recently completely restored it including rebuilding the hydraulics. See:
I have a sort of rolling overhead hoist which didn't do what I wanted but which can hold a hook for a chain comealong. I sometimes use it for lifting things on or off my welding table.
Also, I have a variety of portapower accessories with which I can lift one side of a machine a little and then stick something under it. It's the Easter Island approach.
In the end, being a home shop rigger is about methodical common sense.
metalmagpie