As an example, my trailer has a dry weight of 4,820 lbs. I also added a slide out topper.  So, after getting it and transferring our gear, I had it weighed just before a short trip but without food or drink packed. My trailer ended up weighing around 6200 lbs. And, as I said, that is a really good weight to tow with a 1/2 ton truck. If you figure 15% for the tongue weight, I'm at 9,300 lbs. which is within the truck's payload rating.
Hope this helps....sorry for the long post.
By my math, 15% of 6200# is 930#, for a total of 7130#, not 9300#.  Or am I misunderstanding you?
There are two of us and we tend to go light.  Our plan is to use the rig for 3-4 day trips, with an occasional longer one.
Yesterday, we bought a used Toyota Sequoia, which is rated to tow 7500#.  The TT unit we really like is rated on the sticker to tow 5724# with full tanks.  But we realized that it's too long to fit into our driveway or back into the road.  So now we're looking at TTs rated at 22', which would probably run about 25' total.  The one we liked is the Surveyor Cadet SC226, which has these numbers:
Length	25'5"
Hitch Weight	492 lbs
Dry Weight	4,880 lbs
Cargo Weight	2,612 lbs
It that turns out to be too heavy, we'll keep moving down until we find what works for us.  We still have some wiggle room on our "wanted features" list.