Thanks Simon,
That's some fantastically detailed advice. I wish there was a way to tag posts so they can be found easily by search. Right now I am sure there is some great advice buried in this forum where it will never be seen again

I had a look at the bridge. It appears to be drilled with holes for both string-thru and top-load. I don't have access to the equipment I would need for accurate string-thru, so the top-load option seems best. Also, on the first post, second photo here you can just make out the string ball ends.

DC