Kingw2001, the discussion about overloading, under-loading, matching, etc., etc., pickups and pullers has been discussed on this and other forums ad-infinitum and ad-nausea-um. I bought my first pickup in 1972
and promptly overloaded it with a slide-on that weighed over 8,000 pounds (note the "stuff" on the roof). Went through many red lights with a horn blaring when the light changed at an inappropriate "moment".
My next fifth was 32' and weighed 9,000 pounds, it was perfect for the pickup.
My next fifth was 36' and weighed 12,500 pounds loaded, I did pull it with a 1 ton pickup but I knew that although it could pull it, I couldn't stop when the brake controller failed, which happened to me twice. Second time it happened I was going down hill and it was truly a "depends" moment. Only having a lots of pulling time under my belt saved me from buying the farm.
I knew that if I wanted to RV I needed to "fix this", which was to buy a puller with adequate brakes to handle that load (an MDT).
All the pickups built today, whether Ford, Chevy or Dodge are capable of pulling incredible loads from responsible to the realms of absolute idiocy and unfortunately they "encourage" the idiocy with their sales brochures. Let me show you my own "idiocy".
I bought this pair as a set, the fifth is 40' and weighs loaded 22,500 pounds and that's a converted Dodge pickup 3500 (1 ton). Yes, it would pull it but I had to "plan" my stops well in "advance" and from way back. After one year and too many "depends" moments I bought and converted a truck proper for that fifth.
You certainly can pull what you plan with the pickup you own, just make sure your fifth's brakes are in tip top shape and serviced and don't skimp on the controller, I would recommend a Maxbrake. You might be "somewhat" overloaded but luckily for this group and the industry (RV industry and pickup industry) the overabundant lawyers haven't discovered the fact that they could make some serious money prosecuting RVers in overloaded pickups. I'll bet you the first time it happens Ford, Chevy and Dodge will recall and burn all of their sales brochures.