I agree on the impossibility of securing a TC for 6 with all those requirements. If you can bend any of those requirements, consider adding a tiny, lightweight, hardside camping trailer that will sleep 2 + 2 and easily towed by your one-ton. They are around. Here's a sample: (i was close to pulling the trigger on this model about 20 yrs ago to tow behind my Jeep CJ8)
http://www.fiberglass-rv-4sale.com/for-sale/early-80s-13-burro-travel-trailer-3950-near-kewaskum-wi
or this:
http://www.parkliner.com/
Now if you can find a place to store one of these you will have, while traveling, not an RV but an RV compound! It's been done before. Form follows function.
regards, as always, jefe