My circuit so far:
EDIT:
The insert image thing didn't work.
But the minimum load can be as low as a few hundrew ohms (volume control) or less.
The new guitar I am installing this into(hopefully) will have selective bypass resistance which will cut out of the pickups.
I forgot to include that info originally, since I was testing it on my currently built guitar.
As for the diagram, it will look like I'm adding pointless DC power to the signal. I just decided to leave out the rest of the circuit (guitar-side arduino) for simplicities sake; its a proof of concept. I just need a 9v DC supply between the two capacitors, basically.