That Vermona module is huge. I'm not saying it's a bad choice, but unless it's the main thing you want, it's taking up a lot of space in this smaller rack. Maybe take a look at the Muxslicer for something with a similar vibe that takes up less space.
You'll probably also want a bit more modulation - LFOs, envelopes, and the like. This is what makes modular really tick. The complex ways you can move sound around are much more emblematic of what makes modular special than any sound source.
Plaits doesn't necessarily need a filter, but you'd probably enjoy having another one in here for Plaits or even the noise from your Noise Tools. Noise can be a great voice in its own right for drums or cool sounds (or even melodies with a resonant filter).