Having been around many years, I would suggest you learn more about diesel and propane lifts. The market in your area may support an electric lifts only operation but having more options will help you be successful. As stated by dsakaluk, you may find repairing lifts without the software more challenging than it is now. They change up things from year to year, plus, there are those that will lock you out if you try to access the system without proper codes.
Not trying to discourage you, just be aware of things you are looking at.
I admire the enthusiasm and wish you the best of luck with your decision.