I got this project finished and installed for my client in time for the arrival of Thanksgiving guests.
The bunk beds were custom built to fit in this space. It was a tight fit that made good use of the space. The design also had to take into account a set of train tracks that enter the room at ceiling level and run around the room before exiting through another wall.
You can just imagine a young childs delight as they lay on the top bunk with a train passing by on the tracks overhead!
There is a video of the train in motion at the bottom of this post.