Here is a “down and dirty” summary:
1. I spray the rack and pinion slide gears annually with a dry lube, such as
https://www.amazon.com/CRC-Graphite-...+graphite+lube
I am not familiar with Ford drive train fluid change intervals, however you should think about changing brake fluid and engine coolant.
2. No help on the drawers, except anything can be done with the right tools.
3. If you verify the tire size on the installed tires and they are 22.5” tires go to Michelin’s web site and download the fire inflation material.
Michelin RV Tires | Handy reference materials and load and inflation tables for RV tire maintenance, RV tire management, warranty and technical information. | Michelin RV Tires.
You will need to have your coach weighed to determine the correct inflation. If you are unable to weigh the unit, use the default inflation based on the axle ratings. The default pressure will probably provide a harsh ride, but the tires will not be underinflated.
4. TPMS are fairly well established on the market. I have used the Doran
Rvs, Fifth-Wheels, Tow Vehicles, and Trailers | Doran MFG | Tire Pressure Monitoring Systems, School Bus Safety and LED for over 12 years years, other than a couple of sensor bathe system batteries failing, the system has worked well.
5. I prefer to make the motorhome handle the best possible, I have a Trac Bar and steering stabilizer on the front axle and a Tac Bar on the rear. While I experience some “Bow Wave” from trucks and high winds, nothing “White Knuckled”.
6. Not sure where the information on the chassis air bags comes from. I am presuming you have a Ford chassis since you mentioned the CHF. Did the previous owner install air bags to the chassis?
Fred