Tire shopping for car/SUV led me to think Sam's Club ---might--- have a private arrangement with BFG. If they do, I don't know how far (into how many BFG product lines) it goes, but as I recall I got different results looking tires up on the Sam's site than I found on the BFG site.
If your coach suggests 65-PSI, that is max for Load Range "D". That makes me think "E" might be the better plan. If you haven't, look at a Load/Pressure Chart and you'll also notice that the Dual (Rear Axle) tires need more air pressure to carry the same load as Single (like your Front Axle). That also is printed on the tire sidewalls.