Our Class C can't handle 4 x 4 roads in Colorado--they are worse that backroads in Arizona. So it depends on where you camp. We have taken the RV on some great boondocking trips though with nobody else around us. Used 4 x 4 RV's are difficult to find. I look for them all the time and have seem only a handful--most older and more miles than ours. We like to camp as close as possible to a wildlife preserve and hike there where bicycles, guns, horses, ATV's etc. are not allowed. But now that we have grandkids we often use parks with electrical hookups for their comfort. If your wife's needs are changing how many creature comforts are needed? If a bed in the back is what you need, you probably won't be in back country much, but if a fold old or upper bunk bed is good enough, you can find something smaller that will be more versitile.