I see you are coming from a truck camper, so I'm sure you understand the importance of axle/tire rating. That is a heavy FW, for it's 35' length. It does show a light dry pin wt, less than 20%. Once loaded it will most likely be 20%.
You just need to know your RAWR/tire rating, and if the added wt from a loaded to camp FW pin wt of around 3K-3.5K fits your ratings.
If you don't already know available rear axle wt, you can weigh the truck, full fuel, people, pet, and gear, getting separate axle wts, to see what is left for hitch wt. Don't forget to figure the 200 lb hitch sitting right over rear axle, if not yet installed.
IMO, it will work. You say the numbers work, so I don't see a problem.
Jerry
