Well unless you are going to load up the trailer all the way to its GVWR using the GVWR is going to be on the heavy side. I always say to use the dry weight and add 1500 lbs to that. So the first trailer would be 8500lbs empty, add 1500 and your at 10k lbs loaded for a trip. So figure 12.5% for tongue weight and you have 1250lbs.
The Dodge will tow it with no problem with a good hitch such as the Reese Dual Cam.
FWIW my trailer is 7100 dry and has a GVWR of 11,200lbs! 4100lb CCC! Loaded for a trip I'm at 9200lbs. I pack heavy, but I could easily lose 300 lbs. my tongue weight is 1200lbs+/-.
I agree to go with a 5'er. There has never been one post of someone who was overweight that it ever happened to. As long as you stay under the axle ratings I would be OK with it!