After a few solid days of testing, I can finally say I have this beaut working the way I need it to.

I spotted an Audio contest on Instructables and knew I had to get this working, as it was almost there.

https://www.instructables.com/Tiny-Audio-Effects-Rig/

I put together a small controller with a few switches and encoders on and put a basic sketch on for basic on/off control, and was over the moon to see this work the way I had hoped it would. 

Next step is to create a better footswtich as planned.