Best advice I can provide is to put aside the various 'capacity' numbers for now
Load up your TV as if going to tow whatever
Go out and weigh it, axle by axle. That may cost you a few bucks, but well worth it
Now you will *KNOW* where you are in reference to all of your ratings
Then gather information.
From your TV: GVWR, F/R GAWR. You will have the actual weights for the F/R to
know where you are in reference to their GAWR's
From the trailer you wish to purchase: GVWR, GAWR (multi will have it for each0
PIN ratio from the 'dry weight'.
Now decide how you will load that trailer and then do the simple math on what
it 'might' weigh...to then the percentage of that for the PIN...that is the
loading on your TV's RGAWR.
Since you will now know what your TV's RGAWR's left over is...that should be
more than the above.
Better yet is to weigh the trailer hooked up to your TV, but shopping so you
don't have it yet...why the above simple math working up from the brochures 'dry weight'