Shoot me your shipping addy and I can get you an idea of what it would cost to ship a dual 8" enclosure but I would guess it would be around $80-100 or so.
Most designs will run you around $30 depending on what you are looking for from your design.
This thread can probably now be closed as I have gotten Prorabbit from DC Creations to create me a design this weekend. Looks pretty awesome and can't wait to have it built. Thanks DC