Left to Right :

Input Module Befaco Insrtument Interface V2
- is a v fleshed out interface module, Phantom Pwr for Mics, Sliders for attack and decay of envelope follower, gain, threshold for triggering envelope, inverted envelope out, its a little pricy but FULLY featured. it will be vital to getting CV signals out from drum hits and audio in from Mics.
So
IF
you want to have acoustic drums mixed into FX (delay, filter, phaser, bitcrush etc) AND have said mic's signal produce a Controlled Voltage Envelope, which can then be used to modulate a desiered parameter in the system then this module will be the gate way. So just 1 to start, 3 at fin? good to keep that in mind, 2 def, but three depends on goal and level of dependance on external mic for system control.

Next UP:

Ya Boi Sound Scraper,
It takes 5v so you NEED TO READ UP ON 5V AND DOEPFER A100 5V CONVERTER, but he wild so net to him is a filter to tame, Envelope, trig rev env from Beface InputV2 can be used to treat sound scraper as an instrument struk from befaco which in turn has been struk from Mic which was presumably struck by you. Again just pointing out this direction is SANS sequencer, as you and the striking and mics are all apart of using the synth. aside from Sound scraper Droning and filtering, LFO madness, etc.