using fictional "dry" weights are really a waste of time, since no trailer actually weighs its "dry" weight when it leaves the factory.
you can add a ballpark amount of 400lbs. for the normal "options" that all trailers have. so that puts you around 6000lbs., before water, propane and cargo. plus subtracting the weights of anything in the Yukon(other than a 150lb. driver) from the Yukon's tow capacity, including the WDH's weight.
you'll probably be pretty close to the max of the Yukon but a lot depends on what rear end ratio it has and is it 4x4. also, what's going to be riding in it.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC