We have an F250 also and I am having the Airstream factory install the Ford TPMS on the Airstream in March. They have done many they said whereas the Ford dealer has only installed one and it wasn't even on an Airstram. Using the Ford system is integrated into the truck and the truck dash display so no additional monitor required. Of course this option cost twice as much as buying a basic TPMS from Walmart.
As for the trailer rear view camera I have the Airstream factory setup and I made a bracket for the monitor that slips right over the trucks rear view mirror. Since you have a trailer behind you the rear view mirror is useless anyway so it's the perfect location to put the monitor. I do not have the Ford gps system so use a separate Garmin gps & monitor for that which attaches with a suction to the windshield.