Yes. Ebony is a much denser wood than walnut. Ive stopped using ebony on my bridges and use walnut or blackwood. On my steel strings when I use walnut I make the top layer of the bridge rosewood...it's a bit more resistant to dings than walnut.
Re The Books.....I'd start reading the Design Book first.....there's frequent reference back to same in The Build Book.
Good luck with your build(s) and don't forget to post up some progress pics on the forum
