Hello , I have a question regarding top/back woods. I'm considering having a fretless 5 string bass built using a graphite neck, with Alder as the body wood. I've had this combination before, and it worked well for me. I would like the top/back wood to be merely decorative, and not have a great if any influence on the tone...here's what I had in mind : I'd like to use Rosewood acoustic guitar backs for the top and back. I know that these are thinner than most top/back woods. Any reason why this wouldn't be a good idea ? Might such a thin top split while routing for pickups, or is this not an issue since it will be glued to the alder ? Thanks.