Chris (Bajataco on the forum) has taken that rig clear up to the North Pole!
He has a lot of great ideas I have been reading about since I am fixing my rig up pretty much for Overlanding (Expedition) style.
His partner is also on the forum, Expeditionswest.
Here is Scott Brady's homepage for more ideas.
http://www.expeditionwest.com/
You could always sling a roof top tent off the bed too, and not worry about fitting a topper.
His rig too went to the North pole.
