Welcome to the forum !!!
First, decide if you believe in the OEM ratings system, numbers, recommendations, etc...or not
If not, then do whatever and note that you assume the liabilities
If yes, then learn how that ratings system works, which includes 'recommendations'...that so many think does NOT matter. They do not understand that if you do not follow the OEM's recommendations...that OEM may no cover any warranty or liability
Those TV ratings you list are for the maximum conditions (weight) to the pavement when your TV is loaded. Including the trailer PIN/Tongue weight
The MTRW (max tow weight rating) of your TV by its OEM is derived from a 'curb' TV (stripper model) with only one option (tow option), one 150 lb driver and fluid tanks filled to whatever (some half full, others 1/4 full...to full) and one 150 lb driver. NOTHING else in/on the TV
Also, know that many confuse 'can' vs 'rated for'
Find your TV's GCWR (fairly new rating and many do not understand, nor believe in it) and do the simple math:
GCWR >= TV weight + Trailer weight + stuff
'Stuff' as in all the people, pets, cargo in/on the TV, WD Hitch system, options (factory and after market).
Best to load up your TV ready to tow and weigh it. That will then provide the actual weight for the above formula that will tell you what the actual MTWR is
Good luck !
-Ben
Picture of my rig1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...