I'm sorry, but that rig can't even make it over a set of railroad tracks. Even on perfectly flat ground, Ohio snow would waste the front lower edge of the camper. I don't understand why they even bother to offer a 4wd version. I'm sure that's a great RV, but it can only take me to places I've already been. It lacks the clearance, and is far too big for impromptu adventures.
Towing a car or jeep behind a motor home pretty much stinks. I'd recommend a nice higher quality travel trailer around 23-26' and the shortest truck you can deal with. I chose a CCSB Ford for that. Get a 12' ramp so that it's easy getting the bike into the bed of the truck, most people hate ramps because they use el cheapo 6' ramps.
A nice truck drives great everywhere in the north America, you don't need to tow a minivan just because the trucks kinda big. Just get better at driving trucks. In my case, a CCLB was just too long, the CCSB is all I could deal with. I tow a 23' travel trailer now. I stay short trailers, because if you look hard enough, you'll find one with plenty of features, but they are very easy to tow. Anything over 26', I won't take anywhere I'm not sure about.
When you can just drop the trailer in 2 minutes, it's very nice having a real 4wd truck to adventure around town with.
5th wheel is out, unless you get a toy hauler. 5th wheels are all about 5th wheel camping only. Tossing bikes, and off road stuff at them can be frustrating. I like having 6-8' of bed space. Note that when I tow with a SB and a TT, I can't close my tailgate with the bike in the back, so I remove the tailgate and leave it at home. My ramps and bike are secured with HD ratchet straps anyways. I can slide my bike sideways a bit if I really want to haul the bike with the gate on and up. Without the TT, I just travel with the gate down.
(Suzuki DRZ400S or Ducati 1199s)
Generally, the people that do it best for months at a time, AND still work like you're talking about, have a nice truck and trailer setup. And the wife follows driving another car. That's also nice, because the car can zip along at 20 over the speed limit and get you a nicer campground. Driving the car is no more expansive than towing it (who cares anyways in this case). It also opens up another possibility, now you only need a regular cab LB truck. More room in the bed for bikes, shorter for off roadin' and such. Fords still seat 3.
Many people that used to tow cars or jeeps, are just driving them now.
As for the separate shower/bathroom bit: We just used the shower and avoid camper toilets like the plague. Campgrounds have shower houses, I use the toilets there and the shower in my trailer. If I'm sharing my trailer with too many people, than I throw on some Crocs and use the shower house showers. Some are perfectly clean. And if we camp off road on the beach, we have an outdoor shower. There's also the woods, and you can use the ocean for both! LOL. Last time I was in Key West, I didn't shower for a week. Just jumped in the Ocean in the morning and afternoon. A little salty, but I think that's actually good for us. (people pay extra at spas for that salt)
Ya'll have to figure out a routine. It's easy. Easier than towing an entire house at least.
Traveling by RV, is figuring out how to not to carry everything with you, but still have comfort and a good time. The people that really want to see things, often downsize as their skill level increases. And some other types of people, prefer camp grounds that are just simple giant grass parking lots. So they can tow as huge as the want to.
For people far richer than I:
I've seen those and the little F550 based ones tow tiny little expanded metal utility trailers with dirtbikes on them, quite well. Another option, if you don't mind someone just driving the car, or doing without it. Those all cost more than my house.