Quick update, couple of changes to the build spec due to some bargain Ebay purchases. Tuners will now be Wilkinson, which although not as big a "name" as Gotoh, do a great job of keeping my Vintage bass in tune so that's good enough for me.
The pickups are now going to be WD Kent Armstrong PBV's, these seem to get a good review so i thought i give them a go as they were so cheap (£16 for an unused set off Ebay). Figure if i don't like them i can always fit Seymour's at a later date.
I'm now also in possesion of a Gotoh 201 bridge and a swithcraft jack socket, both in gold, and my original scratchplate has been sent off to The Bass Doc to be matched and replaced.
Finally i decided to shield the cavity with tape and not paint as, after doing a little research it seems like the paint doesn't work as well as the tape. This is now done and a pic is below.