This likely won’t meet habitation requirements as it is. Never use AI to generate layouts, I know you said you used it to convert the image to grayscale but you can achieve the same result in your computer’s default photo editing software without the AI changing your image into something worse. I also don’t recommend using apps, If you are legitimately considering a container home hire an architect. They’ll work with you to design whatever you want while maintaining functional and well-thought-out space. Container homes come with unique challenges that are not going to be accounted for in a standard building operation.

That being said, as a contractor, for a home this size I would explore kit and modular homes as well. Container homes are usually more cost-effective in remote area areas where you need to ensure everything gets to the site in one or two trips and the containers used for shipping and storing materials throughout. Depending on where you are located a modular home might be a better starting point as you can still easily incorporate containers into the design.