Ok thanks @theElevators and @silverheadit actually sounds like a hustle live, having all three plugged in. I have the Helix Floor, haven't reached any DSP so far but I could sacrifice some effects for better reliability. I'm not keen on surprises live though, so I might just keep my Boss voice processor then and have it on stage separately. And the bass player (yes he's connected to an amp live, but in our jam studio he's directly lined in to the mixer) never showed interest in using fancy effects, but I think it could add some flavour to some songs. We do have a really good sound guy but I can't rely on him every time, he's doing it as a friend. Thanks for your advices!