Your tongue should be 10 to 12% of the loaded trailer. If you are tongue heavy you should move things behind the trailer axle if tongue light move things forward. But it should end 10 - 12% . IT is actually quite easy to get there with a little planning. I towed my Denali all over the place without any issues.
S0 looking at your specs, your dry weight is 6253, lets look at this as light as possible. I would say you are at 6350 with propane, realistically then you add in your stuff to the trailer. How light can you travel? Let's use 550 as a good load out for a week. Now you are at 6900lbs trailer weight. Add in 85lbs for the hitch off payload.
That is 690 on the lightest hitch weight. Let's assume you hit 750 - I bet you can get closer to 700 but I will use 750. Leaves you 477 Payload - 84 for the hitch so just under 400 (450 if you get closer to 700 hitch weight). Not sure the weight of passengers but are they more than 400 (450)? Assuming you are within that and the 550 cargo is all you needed the you are good to go.
Let's throw a wrench in the logic, Lets say you needed more than 550 cargo, lets use the max 7750 (we will leave a little on the table), now you have almost 1500lbs of cargo in the trailer (that is a freaking LOT of cargo - I will include 100lbs of propane in this) now you are at 775 on the tongue (light side). So tongue 775 - 1227 = 452 - 84 = 368 allowed in the truck (remember that is full tank of gas and as you travel the number goes up 8lbs per gallon or every 8 to 10 miles
S0 do you and the people weigh more than 368? If not you should be good to go. Just remember you do not need anything in the truck since you have 1500lbs of stuff in the trailer. Now of that 368, I will say humans, pets cell phones... weight them. Keep it light and you should be good to go.
Up to you.
You will be close, maybe over depending on human sizes. And obviously a Freightliner would tow it better.
Double check my math but you see where I am going with this