Hi, right now I am working on a standard 20ft HC, but I need to clarify a few points to fit the interior.
The containers in the references you share are wider, so they can store more equipment than a shipping container. I must ask, what are your needs?
Do you need a bathroom inside?
How many workers will be inside?
Have you considered the full equipment you need inside?
As an architecture student and actual EMT, I am excited about this project so I will appreciate it if you share a little bit more information with us.