I make similar music to what you're talking about and what really unlocked the power of all my other modules the most was a matrix mixer. I have the Doepfer A-138m, but there are also stereo matrix mixers out there if you need that. I highly recommend a matrix mixer, especially for this kind of music. It's one of those things that's hard to fully appreciate the importance of until you start using it, and then it just opens up so many possibilities. I find it important enough that if for some reason I had to start over again from scratch, I'd plan everything around the matrix mixer.
Regarding the sound in that video, you could potentially get similar sorts of sounds through some feedback patching (which a matrix mixer also excels at).
A bit of an oddball suggestion, maybe, but the Lyra8-FX could be exactly what you're looking for (particularly when combined with a sampler/looper):