Thanks, your English is good and so is your advice!
Pamela's New Workout -- okay cool, I was looking at it bc it has a good reputation, so that goes straight in.
The Cre8audio case has built-in audio and MIDI outputs, so that's covered here out of sight,
Chipz and Cellz are mainly tempting because the ~£90 saving on bundle means you effectively get one for free. So fair point, but there's something to be said for a plug 'n' play system. Especially with a brain like mine.
Envelope generators, noted, and I'm gonna check out some DMO demos as soon as I finish listening to this Terry Riley album, then update and maybe make a non-bundle version of this rack.
Thanks!