Sorry to go resurrecting an older thread, but you guys seem to be missing a trick with the bond problem. I'm a wine importer, and I rent space in a contract bonded warehouse.
They look after the paperwork with revenue, and I'm charged an "in" and "out" fee everytime I send/receive stock. Aside from that I'm charged a weekly amount on the rented space. Much simpler than setting up my own bond. You need to have a guarantee from your bank with revenue for your monthly excise limit, but that wouldn't be very difficult to get as a microbrewery-sized stock holding - and therefore duty deference - would be small.