The mechanic should take care of checking all the Ford related parts and components if that is part of the plan. That should include brakes, tires, all fluids, cables, belts, filters, battery, and so forth. It might even include an engine compression test.
The coach will need a top to bottom inspection for any signs of roof leaks, window leaks, water system leaks, toilet leaks, shower leaks. If this unit was not used for a long time, I'd check for evidence of bugs and rodents. I'd check and test the AC sockets for power output, test all the 12V fuses and 12V outlets. I'd pay special attention to the propane tank system for evidence of leaks, corrosion, and electrical wiring wear. I sanitize the fresh water tank. I test the coach batteries. Open up the outside compartments for the water heater and refrigerator and examine those areas for bugs, spiders, and debris. Use a shop vac to blow the dust and dirt out of those areas.
As you plow through a "To-Do" list something this one, you'll undoubtedly find other areas that need your inspection and perhaps maintenance. Good luck on your Tioga Project. At the end of the day, it ought to be fun.