As downtheroad says, payload (for occupants, fuel, hitch, junk, and trailer tongue weight) will be your downfall. Search the forum and read - this has been asked and answered many times. The way to determine what you can get by with is to load the truck up with everything and everybody (including the WD hitch components) and head for the nearest CAT scales. Weigh front and rear axles separately (the CAT scales are set up for this) and you'll also get a total weight. Subtract the total weight from the GVWR on the door sticker. This will be your remaining payload. Subtract the rear axle weight from the GVWRR and you'll have the remaining capacity for the rear axle. Next, take the GVWR (gross loaded weight maximum) for the trailer you are considering - NOT THE DRY WEIGHT listed by the manufacturer. That will be the safer number to use for total trailer weight. Calculate 12% of the trailer's GVWR for tongue weight to see what you would likely be putting on the hitch. If all the numbers come in within the ratings, you'll be OK. You don't have much to work with towing with a loaded 1/2 ton, though.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015