I have this same fridge... do you have photos of it mounted? Does it sit on drawers?
Mine's just on the Dometic slide, with a 4X4 Labs jerry can holder on the left, and my DIY sleep platform on the right which sits above 2 medium size Rubbermaid bins. The bed does not rest on the bins, it sits on the front end on the folded halfway down second row seat, and then at the back end on 2 adjustable table legs I bought off Amazon. The bins hold all my food, utensils, pots, etc., in the rearmost one, and recovery gear in the forward one. Hope that helps.