If you're trying to do a small drum machine build here...DON'T. You're far better off with a dedicated drum machine that does more (because it's designed for this purpose) and costs LESS than your efforts here. But to be frank, I don't see what you're aiming for here.
IMHO, having to wrassle with two Disting EXs will be a real chore unless you're all about menu-diving. And a lot of the rest doesn't make sense without context, I would presume.
-- Lugia
heh. yea it is particularly un-focussed. if it was a utility rack as the original poster has labelled it, drop the drums, and why is there a little mikey, when you have a ES9 going off to a computer. surely youll have an audio interface there for recording whatever. furthermore ES9 is way overkill for this little rack too. i would say rethink what it is youre trying to achieve with eurorack.