Hi grumpypapa,
Welcome to the Heartland Owners Forum. There's lots of useful information here along with a great bunch of friendly and helpful people.
I'm sure you'll get a lot of opinions on this shortly.
The trailer has a label on the front, off-door-side that shows the Gross Vehicle Weight Rating. For planning purposes, you should assume that 20% of that weight will sit on the hitch. Add to that the weight of the hitch itself, bed liner, bed cover, tools, firewood, pets, passengers and anything else you put in the truck. Then compare that total weight to the payload spec of your truck. You can typically find the payload spec on the label inside the driver's door frame of the truck.
So let's say the GVWR of the BH3185 is 14,000 lbs. You should assume pin weight of 2,800. Add to that maybe 200 lbs for the hitch, and a few hundred for passengers, pets, etc. You'd probably end up around 3500-3800 lbs.
If the payload spec on the truck is close to that, great. But if the payload is 2,500-2,800, you'd be significantly overweight.
So now you need to look at the label on the truck to find the payload, and call the seller to find out the GVWR of the trailer. Then you can do the math.
You may also find it helpful to visit
Fifth Wheel Safe Towing.