Asking for advice setting up truck for tc

..... We read several articles on several sites and basically AFTER your TC is fully loaded with batteries, propane, alcohol, clothing, food, entertainment stuff, coats, flashlights, cords & hoses, etc, etc, you’re gonna be over GVWR on a SRW Duramax on any Hard Side TC..... We are FULLTIME in the LIGHTEST Arctic Fox TC, an 865, on a 2019 Duramax Dually..... Fully loaded we’re 1400 over GVWR...So you might wanna go to a Dually unless you wind up with a pop up TC..... Talk to some folks driving a Dually and they will tell you that they wished they had gone that route FIRST... Yes you can do it with a SRW truck but you can enjoy the driving a whole lot more with a Dually....We do a lot of Western states mountains with ups & downs reason we got the diesel ( power going up & exhaust brake going down ).....If we lived on the Right Coast probably woudda gone with a gasser as not so mountainous..... Might not be what you wanna hear but it is what it is.....