Mosey, Just in case it isn't toooooo late to chime in. There is also gross axle weights to consider. GVWR is less than the combined gross axle weights (front + rear). Actually tongue weight adds to rear axle load of the tow vehicle (with a standard hitch, not weight equalizing, it takes weight off of the front axle.)

Please do not overload too much too often, you'd be missed.

Pat