This video is largely responsible for me getting into eurorack.

My own tips for good friends for DFAM start with Pam's and Disting. Attenuators and envelopes are also good, maybe a modulation mixer. Either a quantiser or external sequencer can be nice.

If you really want do do techno, I'd also recommend getting a seperate voice for the kick, and maybe the hats, but this could just be another drum machine.