In order to be more helpful in giving advice, it would be great if you can give us some example patches.
Do you know about the patch function on Modular Grid?
This would give us a clearer idea as to the proposed signal flow.
The thing that jumps out to me most is the compressor. I take it you’re using it to tame loud clicking noises and bring them more in line with some background hiss?
Such an advanced compressor as that one is more useful in a small system if you have more traditionally musical elements running through it. If you just want to tame transients, you can create compressors in Audulus and free up space in your rack for other things.
Since you’re interested in going to the all out hybrid system, you want to really ask yourself what is most useful to have as a hardware module and what you can build in Audulus.
Pulsar is a cool modulation source, but you can build it or something similar to it in Audulus.
DATA is an amazing module with lots of cool functions, but if you just want a scope, we’ll have one soon enough in Audulus 4 that will have similar functions.
I’m also not sure what you’d be using the FH-1 for. You can only have the ES-8 or the FH-1 attached to the iPad, and you have seemingly enough outputs from the ES-8 alone to do most of the modulation you’d want to in your system.
If you’re really into noise harvesting, I would suggest making your rig into the sound interface. Check out some Folktek modules like the Resonant Garden.
There’s even a module that uses dirt to make noise.
My gut is telling me you’d be happier using these analog interfaces for noise making and then modifying them in Audulus.