Need advise on tow vehicle 3500 or 3500 dually

I think even if you bump the wheel size and capacity of the tires you are still limited by the GAWR. My SRW drive 1-ton Dodge has a GAWR of 6200 lbs. With my 32.5 ft trailer (34' actual) loaded for weekend camping, my scaled weight on the rear axle is 6000-6200 lbs depending on how I have packed. If you plan on full timing then I say absolutely the DWR. If you are weekending then the SRW will suffice but the DWR gives you a lot more safety margin. I wish I had gone the dually route but talked myself out of it as it is my daily driver.