The roof will be either Glass or Polycabonite, it depends what is cheaper. I do plan to have at least one full length table in it, it will probably be filled with dirt or sand.
The floor will at first be dirt, and then maybe later gravel.
I also have an idea for a watering system, I can take a bucket or plastic barrel, put a sump pump in it, and run some pvc pipe with misting nozzles. I can run the water system with a small timer.
I want it tall enough so I can grow small orange or banana
trees in it.
I hope to get started on it this year, I will have to see how things go this year.