https://modulargrid.net/e/intellijel-%C2%B5midi-jacks
this I mean.

As for a case, you can go a lot cheaper DIY. Check out my "SUITCASE". it is literally a 20€ suitcase from ebay. I screwed three rails in from exploding shed and used a power module with flying busboard. Costed less than 200€. You can just buy a few rails and build a box around it in any way. On the other side: If you spend 5k for a system, 10 percent for a decent case seems alright too. Some good stuff on ETSY.