Thanks for the advice.
I will use the Disting and figure our how to use the slew rate limiter. If I need that function a dedicated module will be my next buy.
I have PAIA:s modular synth 4700 that I built as a DIY kit 1982. It is still working (partial) . The problem is that it use Hz/V. But I can use the filter, EG, VCA and spring reverb.
I even have the Moog Werkstatt and some guitar stomp boxes like reverb and a Eurorack step sequencer from Synthorek that I can use plus the Korg SQ-1 and Arturia Keystep and Beatstep.
So I think I can have some fun with what I already have for a start.
But I am sure that you are right that the next modules will be a slew rate limiter, an EG, one more VCA and some effect module.
But as I wrote, for the moment I have a limited budget :-(