CV on aquaboy2012 ?????

[axl]

Hello,
I'm just waiting parts arrive to start with the building of the aquaboy.
I was looking at the schematics and wondering if is possible to add some cv controls,
I want to put aquaboy in my motm system (yes i'm not a guitar player sorry folks), and will be nice to have CV on drywet, time, and feedback control.
Anyone have try before??
thanks
Alex