You can drive with 5.13 and 35's (I guess it would be about the same as my 33's and 4.88), but add the camper and it will be a DOG. I would either go with either 4.88 and 31's, 5.13 (new front axle) and 33's, or 5.38 (both axles are changed) and 35's. Honestly speaking, my 33's have gotten me everywhere that my buddies' 35's take him, so I would go with the 33's.