Assembly of a 4 post lift is not too difficult and can be done solo. Engine hoist, or similar, small fork lift, or a small loader will work.
The heaviest component will be the ramp with the hydraulic cylinder, but again, it is manageable.
Should you have interest in seeing the assembly process, go to post #52 in my thread. There, you will see pictures from off loading from the trailer, the unit in the shop and finally the individual components being assembled with the use of my little loader.
Notes:
Purchase extended length approach ramps if any of your cars are low slung. Also, plate steel approach ramps can be heavy so if there is an option, get the aluminum ramps.
Further, some lifts keep the approach ramps attached to the lift. Personally, think this is a bad idea because there is the potential of accidental contact with you or others in your garage and they add to the overall length of the lift when permanently attached.
If you assemble the lift outside of your garage, be sure the assembled unit will fit through your garage door opening........
Purchase dollies for the cars because they are indispensable for moving all kinds of items in your garage, home, shop. Also purchase the casters for the lift. Just one set is needed to move your lifts around, and there will be a time that they will have to be moved.
My choice in lifts was Backyard Buddy. Made in Warren, OH. US or Canadian steel used.
Just click on the link below and go to post #52. (page 3)