thanks so much for the comments!
The reason why I picked a small case is because regardless of anything else, I wanna have one rack that is small enough so I can take it somewhere, hence the travel case. Also space is not the issue for me at this moment. I am learning modular, and I dont have any fancy modules that I need to cram into my rack, rather, Im looking for a small and simple setup where I can learn how utilities work and spend time and energy to really understand single modules, and, signal flow! So Im really into chosing the right utilities for me, even though that means renouncing sound sources or other fancy stuff. I guess no matther how big my rack is at the beginning, I will always want it to be bigger down the line. So I might as well get a small travel case that I can use until I know what more I want and then keep it as my more mobile case.
I will probably go with the Catalyst Audio Time’s Arrow for pitch sequencing. The rest im still thinking about...