Big modules and a small case. You might run into issues.
You mentioned Euclidean rhythms. I believe Pam's New Workout has that going for it as well. You can get full-blown sequencers that do Euclidean like the Westlich Performer. That would give you the ability to save your set-up. The Westlich can also be controlled externally via a Novation Launchpad. Which might be something nice as you could mount the LaunchPad within your drum kit for better control.
If space isn't an issue, you may want to check out Tiptop Audio's Trigger Riot. For pitches, you might like Noise Engineerings Mimetic Digitalis. It's compact and can do four channels of CV information. The sequencer steps through 16 positions but is set up via a 4x4 grid that can take triggers to reset, or move the position down or to the right.
You can also add more complexity to your rhythms by incorporating some sort of logic module (a comparator).