We asked if they would put the recliner chair option in our 25 during assembly and they could not. Two years later we took it back to the Airstream Service Center ($4,000 parts, material, labor) where they can do anything.
So you may have to go this route; also a good chance to try things out and make sure your proposed changes will actually work for you, or you may want to alter the original idea.
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts