Stereo and Mono rigs sharing effects with GCX

[MusicMaker]

Just joined the forum, searched for this but didn't find anything, sorry if it has been addressed before.

I want to drive three separate amps with my GCX and ground control, one is stereo and the other two are mono. What I can't figure out is how to have them share the same set of effects which would need to run in stereo under one setup and mono under the other two.

It would be something like this:

guitar
pedal board
GCX input

3 preamps:
triaxis (stereo)
JSX head (mono)
Legacy head (mono)

shared effects:
bbe maximizer
g-major
intellifex

poweramps:
2:90 (stereo)
JSX head (mono)
Legacy head (mono)

Each of the amps has dedicated cabinets and I'm also not interested in trying to mix and match preamps and poweramps. I'm guessing the only way to share the effects is see if I can configure the g-major and intellifex stereo outputs on a patch by patch basis and then duplicate my patches one for stereo rig and one for mono.

Is there any other way to handle this, something I may be missing?

Thanks
~ bill

[BigDogMKV]

I am in the process of setting up a similar rig. GCP, 2 GCX', Diezel Herbert, Boogie MK V, and a Triaxis/2:90 stereo. Effects will consist of several Keeley and MXR pedals. G-Major, G-Force BBE S.M. and if possible, I would like to configure a G-System in as well. Rather complex and need some help or best suggestions to set this up.