The lift will go about 10' as shown. My ceilings in the garage are 9'. The angle iron pieces are simply bolted on to the telescoping end of the lift. I'm sure it could be made to go a lot higher, but I would weld the angle iron pieces if I were going to make them a lot longer. Alternately, you could get a longer telescoping piece to get more height. The lift is overbuilt for the application, so it should handle it easily. The ceiling in my shop is 12'+, so I'm going to try to find a longer telescoping piece for when I do the shop. I'd rather not weld on my engine hoist!
I thought about renting a lift. They get $32/day here, but it's also a 25 mile round-trip, once to get it, and once to bring it back. Considering I have three separate projects (eventually) that would be 150 miles of driving, not to mention the rental cost. When I do my basement, and my shop I'll need it for much longer than a day, so it would actually pay for me to just buy a cheap one, but I already have the engine hoist.
Pumping it up doesn't take long. My cylinder is double-acting with a light load, moving the lift in both directions until it encounters a load. The drywall isn't heavy enough for it to go into single mode. Keeping it level is no big deal, either. I just keep a stick handy; level with one hand, pump with the other.
Another drawback is that it doesn't go straight up, so you have to reposition the hoist once you get close. I get it close, pump it up against the framing (lightly, and then shove the sheet into place before screwing it off.
All in all, it works great, especially for an old man working alone. A regular drywall lift requires lifting the sheet on to it, and I'm not sure I could anymore. 5/8 drywall is about 70# a sheet for a 4X8. I'll try to time how long it takes to pump it up, and I'll get a pic of the angle iron detail today.