I would go bigger - either 104hp/6u or 84hp/9u - ie a mantis when they are available again - or a doepfer lc9 - these are the best value/known cases - with decent power supplies etc

always try to leave some room free for expansion!!

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities