IF you haven't towed or driven large vehicle, I would suggest some "rethinking".
Maybe a small motorhome, (sans washer and drier) Something either in a class B or C. 22-26 foot box. Some are built on Mercedes or Ford Sprinter bodies, are more fuel efficient and can be quite comfortable for two people.
An example of the sprinter type units
MelbourneAnd the full sized class C units based on full sized van chassis.
ForesterAs others have mentioned, many campgrounds have laundry facilities, and others can be found easy enough.