That is a great layout, you're going to love it! Our next trailer will also have a walk around bed, I'm too old to crawl under the shelf anymore LOL
Your camper is going to feel a lot bigger because it is
it's actually 22' long. They put only the box measurement in the model now, so 18' is the actual living area box size and overall it's 22' from hitch to bumper. Not sure why they changed this. My present Fun Finder X 189FBR is 18' overall - the "box" is 15'. Our next trailer, Grand Design 19RLE is 23.5' overall.
Enjoy your new camper!