I am gonna say this will not fly. Too much liability that will require you to charge more than anyone is willing to pay. Have you tried to sell anything on Nasioc or other forums, nothing but cheap lowballers. No one would pay a lot to do it. They all say they would but when it comes down to costing them money they will bail.
Obviously certain jobs almost require a lift, so you might get that business, but if the cost is too high you might just pay a professional and be done with it.
The demand might be there, but the cost will put a damper on that demand.