Well by now the OP should know that a pick up can pull a lot more than it can carry. My 2010 F-150 can pull 9500 lbs. but the max cargo means it can only carry 1411 lbs. And, each vehicle is different depending on the features it left the factory with.
Of my 1411 lbs. of cargo capacity two adults, a big dog, bikes and other toys eat up about 700 lbs. leaving 711 lbs. for the tongue weight.
The hard fact is a half ton pick up is good for about a 5000 lb. dry weight TT, when both are loaded for the road.
I have never found braking to be a issue with properly adjusted TT brakes, even in the Rockies.
