Suburban furnace sf35 test bench, what do I need?

I need to set up a “test” bench to work on a Sururban SF 35 furnace in my car port.
The list below is what I think I need…

Please let me know if I’m missing anything off my list.

Pull heater and propane regulator and propane tank and have on hand, fully charged battery, fused at 7.5 amp’s, volt meter and hand tools. If needed, I have my old homemade man-o-meter if needed. And of course manuals.

Please let me know if I’m missing anything.

Thanks