First thing to consider is your truck adequate to tow that trailer. Get the GVWR from the door jamb and the GCWR from the owners manual. Get your truck weighed with full fuel, cargo, passengers and hitch.
GVWR - loaded truck = max loaded trailer pin weight.
GCWR - loaded truck = max loaded trailer weight.
The pin weight on a typical 5th wheel is about 20% of the trailers GVWR. On a 3/4 ton truck, you will reach the GVWR of the truck before you reach the GCWR or the theoretical max tow rating as published by the truck manufacturer.
There are lots of RVers out there that are pulling a lot more than their truck is rated to tow and encourage others to follow suit. I recommend getting the weights, work out the numbers and see if you feel comfortable exceeding the manufacturers weight limits.
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot