To further explain i have made a basic diagram which hopefully sheds lights on what I would like to have

Current situation with problem 1
https://drive.google.com/file/d/1IOLw3usFERrRKgA-N71aUs9sDtNcVrrk/view?usp=sharing

New Case (Need USB/MIDI to CV Module)
https://drive.google.com/file/d/1UnxxlANQ0iGCQeApaYumAQNG386iKZsV/view?usp=sharing