First off, nice track, thanks for sharing!

Secondly, if you're committed to this smaller rack size my suggestion would be to get an ES-9 next and stop there for a couple weeks or so. You're good with VCV Rack and VCV Rack + a Rings + an analog filter will go a long way. From there you'll get a good sense of what you need next and how to integrate all the utilities Jim mentioned (even if they're virtual).