Welcome to the forum. I like the fact that you have a straight shot from the cab to the back bedroom. That should help in case he needs aids to walk. There are independent manufacturers that make lifts for the passenger seat of the coach door if you need them (Hopefully not)
This forum is a group of owners and we help when we can, but Forest River has a help line for problems. Congratulations on your new rig.
2015 Dynamax REV 24TB class C