Towing F-150 with a Hydralift installed

I'll add what I found out today. Called Blueox and they said the tow bar was about 3' behind the hitch where it attached to the base plate and the swivel point 8-10" aft of the hitch. I briefly looked up hitch extensions and the Curt versions said the extension reduced the rated towing capacity by 50%. Since the Hydralift is rated to tow 7000#, 50% is not enough to tow a nearly 5000# truck. However on the Reese site the drop down extensions were rated at5000# and no mention of reduction to tow rating. Those also said for 4 wheel down towing only. Those didn't specify if they extended or just dropped.

I am figuring I will need another 12-18" extension in order to be able to tow the truck and not have truck to Hydralift contact but will need at least 5000# capacity.