If you dry camp get a trailer. A MH & trailer with toy will love fuel. I would think some 40' 5th wheel TH will accomodate that depending on floor plan. And they will carry over 100 gal of fresh and have larger grey & blk tanks also. And the fuel station will eliminate carrying fuel cans. Now this is just my opinion. I've had TH'ers for 15 yrs so I am biased. Good luck with your search.
You couldn't hold a gun on me and get me to pull a tongue pull that size & wgt. Don't think you'll find much in that type that will work for you.
Glen
04 Tail gator XT 34' 5th wheel garage model
200w solar 2 GC2's 800w inv
Truma tankless WH
99 F350 CC DRW 7.3 ais intake, adrenaline hpop, JW valve body,
cooling mist water inj, DP tunes, 4" exh sys
trucool trans cooler added
2011 RZR 900xp