May have already done this but before the trip have vehicle serviced (oil, lube, brakes, filters, etc), check tire dates to make sure they are not 9 year old tires (replace if original tires). On travel days, check fluid levels and tire pressure before starting out. On the air manifold that feeds the air horns install a compressed air outlet and purchase an air hose so you can top off your tires with the on board air compressor. If you have a smart phone, there are free apps for truck stops, fuel locations and rest areas. Plan ahead for fuel and use google earth street view to check ease of entry and exit of fuel stations. There are also apps for campgrounds and rvparkreviews.com to check potential stops along the way.