Great news on the neck!
What ya thinking about the body?...
Natural Wood, Stain or a Solid Colour?
For me, It's screaming BLACK to go with that Maple neck... or an Aubergine Purple off Black...
You thinking Rattle Cans?
That scratchplate? Is/was it white plastic? looks like it could be anodised metal, hard to tell from the pics... but i think that should also stay... so many P-a-likes have slightly different shapes or screw spacings...
Keep the bridge, that way ya sure the mounting holes line up... but as mention you could change the sadles for threaded for a bit more of a vintage look, maybe have em off something like this for £15?...
https://www.northwestguitars.co.uk/vintage-style-4-string-bass-bridge-with-spiral-saddles/
@KiOgon P bass loom - Quality Pots n Jack - is a good idea for £25ish - Got one for my Budget Bitsa P