I've owned a Phoenix since 2007. Never had a problem with the strength of the lift bars ( No Bending) and the roof is very strong. I wanted air conditioning so I had Rob put it in the rear. See Pics. I currently have this for sale..
Looks Like a Nice Set-up !! Hope you get some time off soon. BTW, if that sheet of plywood under the camper becomes a problem a rubber bed liner runs about 3/4" thick and won't rot..