One possible problem I see... Sorry I have to run so I've only skimmed other responses quickly so I don't know if somebody else has brought it up.
The floor under the bed on the 19 is raised a couple of inches, to make room for the fresh water tank. You don't have a flat floor right from the front to the back. You'll have a step up to the rear dinette... this won't work with your wheeled chair idea...
The floor under the bed on the 19 is raised a couple of inches, to make room for the fresh water tank. You don't have a flat floor right from the front to the back. You'll have a step up to the rear dinette... this won't work with your wheeled chair idea...