Blank slate, set up suggestions needed

What would everyone suggest for room sizes?
I’ve just taken some exact room specs, I’m currently entertaining the idea of moving the interior walls, so

excuse the non engineered drawing! :rofl:
Looking to do these rooms once for optimal space, functionality and quality! I may just do a separate post for the grow room/space reno if I can get a plan put in place combining peoples ideas and inputUploading: IMG_0465.jpeg...