Congrats on your Quantum
fifth wheel acquisition. I have always thought they were the nicest looking small fifth wheel available.
Keeping the weight
down on camping trailers is a high priority in their design, (sometimes too high, resulting in problems for the end user). To panel the walls with hardwood flooring meant for homes completely disregards this priority, in my mind.
One resource that is seldom mentioned on this forum is the collection of many publications on boat and yacht interior design. The structure and application is very similar. I have never seen any use of ceiling tile on a boat, but interestingly there are some designers who use custom home style wall papers.
You'd want to research this before you attempt it. I'm sure there are some special types of wall paper as well as special adhesives that would be appropriate for a yacht or RV. The colors, designs, textures and material to select from is mind boggling, so if you go that route, your Quantum
will be unique, for sure!