Rates vary around the country, but I could rent a scissor lift for $192.00 per day or $350.00 for a week without delivery. I would get one on a Friday and plan on returning it on Monday. If the job wasn't finished, big deal finish it up during the week. If it still isn't completed, the monthly rental is $665. I own one, but if I didn't, I'd rent one all the time. They can make two weeks worth of ladder ceiling work turn into two hours.
A one man lift isn't worth a pinch of $h!t for installing fixtures. With a scissor lift, you have a platform anywhere from 6' to 12' long to walk back and forth on to run the screws in. Mine is right at 10' when stretched out. The last shop I wired with 16' ceilings had three rows of eight 8' and one 4' strip (52' total length) coupled together. In eight hours I was able to install all of them and had two rows operating as well as the wire pulled through the third row, which was up and running in about an hour the next day. If I'd been using a ladder, it would have taken a week.
I would also go the LED tube route. When a lamp fails, and it will, all that is needed is a 12' step ladder or a braver than me person on a 10 footer to go up and change the lamp.