Dry weights are meaningless.
You must know,
A, Yukons loaded ready to travel weight,
B, Yukons GVWR
C, trailers GVWR
Subtract B from A will give you available payload.
Twelve percent of C will give you the maximum tongue weight.
Does tongue weight fall over or under available payload?
While you may never reach the maximum numbers, you guaranteed will never see the advertised dry numbers. So always error on the side of caution.
IMHO, with family on board your very likely not going to have enough payload with that old of a vehicle. But numbera dont lie, so run them.
