Thread: Techno modular - suggestions
Basimilus Iteritas Alter by Noise Engineering is an absolute must for this, plus the Mutant Drums. The main question will be: how will you sequence your drums? If you want to do it without external gear, Surgeon uses either Trigger Riot or Circadian Rhythms, which both demand alot of real estate (28HP and 36HP respectively). The alternative is something like BeatStep Pro.
If you google image search for "Surgeon Modular" you can see his 208HP racks.