Note that your pictures haven't attached, DIEFOX1.

The thing to do is use the braided screen as the ground connection between pots where you can to save running separate ground wires. I'd suggest drawing it all out before you begin soldering and posting the drawing here.

Have a look at this video to get an idea how to use shielded wire in a general sense. There are lots of good wiring videos on the Six Strings channel, but unfortunately he doesn't do a big hollow bodied guitar like a Gretsch or ES-175.



You'll need to adapt some of his wiring methods slightly, such as the 3-way switch wiring, but you can still use the solid wire method with the box-style of switch.