It is a lot simpler than that spreadsheet. Take the gross weight of the trailer , (not dry weight), and multiply by 13% to get realistic tongue weight. Add 100 pounds for the weight of the WD hitch itself and then look at the door sticker on your Yukon and see if you have enough cargo capacity to carry that and everything including passengers that will ride in the Yukon. The maximum towing capacity is a fictitious number that you will never reach before going over the weight you can carry which is the cargo capacity.
I think that trailer will be a handful for a Yukon. My 23 RBS Mountain series has a gross weight of 7500 pounds and the loaded tongue weight is usually right at 1000. Add a hundred for the hitch and it is about all you can haul with most half ton trucks.
The 21 RD is a little lighter so it will work nut you will want to spend a day at the scales with tools to adjust the hitch to optimum. That will make it behave reasonably well but you will not want anything heavier behind you for sure! SUVs make great people movers but their short wheelbase and soft suspension are not optimal as tow vehicles. You can make it work though if your setup is good.
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2020 F28 RKS Titanium
2017 Creekside 23 RBS
2016 F250 Super Crew XLT
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