My first idea was to have the kids in the sleeper of my conversion. (I did a motorhome and not a toter) But ended up scrapping that idea due to a length problem.(Yes I ended up having to pull the 2 back seats and tear out all the work I did in the sleeper, long story) Anyway, it wasn't that tough, but did take some time.
Here is a few pics of the interior with the added air seats
2003 28' Show Hauler Motorhome on a 1995 FL 120
www.showhauler.com