It's taken a while to figure out where to put everything but this is the current state of the head, seen from the back. I'm just trying to work out how to mount the 5" screen above the usb hub. Also, I've salvaged some mini speakers from a dead monitor that should save a load of space, so the plan for audio now is to install only a low-power D-class amplifier, but wire in an extra socket in parallel with this so I can add a bigger amp & speakers as a backpack option later.