Congratulations, your pickup date will be here in no time.
I'm also towing my LEII with a 2022 F250 6.7L Tremor. I had Oliver upgrade my bulldog coupler to 2-5/16" went with the B&W Tow & Stow 3" shank and 7" drop. You could get away with less drop for an Oliver but I've never had a problem with that being too much drop.
Here is a picture a grabbed this morning with both truck and trailer loaded to give you an idea how this combination sits.