Looking good Mally'
Yes, after doing the dummy assembly, there is a bit of a gap between pickup and the pickup cavity... I think I will extend whatever finish I go with into the cavity and see how it looks... I do like your idea of making it black though....
As for mounting the bridge, maybe lay some quality masking tape as I did to protect the finish whilst you mark out and drill the bridge?
I plan to recess the cavity cover plate, so I have drawn up a new one which should follow the outer contour of the body a little better than the original cover plate...
I have an idea to use the same (slightly more fancy) material on the cover plate and truss rod cover plate to continue the theme throughout....