ProfDanT is your man for this .
He tows a trailer that size with a Tacoma V6 pickup.
We dry camp 70 % with a 2002 21T Komfort pulled by a 2002 gmc diesel , both ordered new for that specific type of camping.
21T has 50 fresh , 45 gray , 45 black .
7280# GVW on the axles but only 4800 # advertized empty .
We use 1000 # tongue with the 50 gallons full in the front.
Shock absorbers
we upgraded the tires a load range and 20 cm in width .
we use 12 foot long HEAVY DUTY long jumper cables to run from all 4 batteries.
we park the trailer then turn the duramax around to jump.
we do not need solar or a genny .
the pickup gets driven every 2nd or 3rd day and when we return we just hook up the jumpers .
the 4 batteries equalize and we do not run the pickup with the jumpers trying to charge the rv batts .
we carry 3 of the ubiquitous 5 gallon coleman jugs and refill fresh .
we camp with other boondocking friends , all of which frown on generators .
For the rig itself I would wait for ProfDanT as he has a lighter weight setup.