rruff
Explorer
"Overlanding is a form of travel that combines long-distance journeys with camping, often in remote and off-road environments, with the focus on the experience of the journey itself. Camping, on the other hand, is a more general term for spending the night in a temporary shelter outdoors, which can be done at a designated campground or in a more remote location. Overlanding typically involves more self-sufficiency and vehicle-based exploration, while camping can be a simpler activity with less emphasis on the journey"When you start talking pickups and what they can haul you are going CAMPING!
"Overlanding is a combination of remote travel, off-roading, and camping."
The OP states that he is "building an 8' composite camper", so even if the terminology was wrong, he is obviously going to camp... and he needs a vehicle to put that camper on.