Your set up would be a good candidate for an Andersen hitch. Model 3350 or 3380, depending on how much drop you need.
Here's a link.Many WD hitches require greasing the trunion bars and hitch head. This can make hitching, unhitching, and storage a bit messy. When people ask which grease to use, a frequent answer is "whatever color matches your clothes and upholstery". Their average weight is 80 - 100 lbs.
The Andersen hitch weighs 60 lbs (including the box it comes in), uses no lubrication, takes up less storage space, and has sway control built in.