Hi Thomas, welcome to the Club!
As this is a public forum, it's best not to post your phone number or email address, so I've edited your message. There is a message icon that should appear under your user name that registered users can click to send you a private message through the forum.
Best of luck finding your dream bass. The string spacing you prefer is a bit difficult to find in Alembics, as they are usually built with edge-to-edge spacing (not center-to-center). This is roughly 18 mm center-to-center on the lowest strings, and roughly 16 mm on the highest strings. But they will build with any spacing that the client prefers, so you may just be in luck ...