I'd advise bigger still - you have no room for expansion past what's in the 'bigger' case and imo 1u is a false economy - the cases that have it are expensive for what they are and often include superfluous functions that you may not need - midi and output modules are the main culprits here!
-- JimHowell1970
Yeah...you'll note I only put Intellijel tiles in there, treating the tile row as a second utility bus. It DID allow me to shift the modulation mixing/inversion/etc/so forth up to the QuadrATT, so that was a useful space-save for the 3U row. As for the I/O tiles, they're in so that the 1/4" case jacks are useful...so they went in, although I did make sure to go with that new "Stereo Mixer" tile. It allows easy parallel processing, or you can use it as a very basic crossfader, and it connects to the output 1/4" jacks just like the original Stereo Out.
But yes...Eurorack is like the grout mold in your shower: no matter what you do, it keeps growing! MY advice for a first cab would either be a Mantis or a reasonably-cheap portable cab like the ones Case From Lake builds. And in both situations, you're dealing with cases that have bigtime current capabilities so that your system never gets anywhere near its maximum draw.