Damn that's a challenge - this is why so many folks have F250's though...
What happens if you carry both bikes off your back bumper, and then extend that carrier to attach the camper to it?
Someone here at work recently had an E3 up for sale at $9500 - I think it was a 2006. I should see if he ever sold it.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock