Great, thanks! I will not bother with the AI for this build, nor worry about adding another VCO. I'll also have a look at some expression pedals.

I do have a couple of 1/4 to 1/8 cables - I use them between my mixer and AI. The thickness of the cables bothers me, as I am more used to thicker cables :D

Two quick questions, if you don't mind...

1) when would an AI module be useful?

2) can you recommend any interface modules for pedals?

Thanks again!