Check the depth, so you'll know the cornies will fit. I've seen a vertical ice cream freezer converted.
Most commercial units have their condenser coils in the back of the unit, rather than in the walls. If that's the case, you can put the tap lines almost anywhere. If the unit has a sliding glass top, you could use party taps for the time being.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk