Okay, got the pickups and switches all soldered in and working. Yes I now realise this was very ambitious for a first/second build, but wow, what a feeling when you plug in to test the pickups and they all work as they should. Necks go in tomorrow as it's now late. Here's some pics of it so far.
Thanks Simon, I left the wiring as one volume for each neck. no separate volume for bridge/neck pickups.