Travis is right, you need a Customs Broker. I have a dear friend that has her own company. If you`re interested PM me. All of these questions, they have answers to. Customs Brokers can probably even get you a better rate then you got on your own. They have contracts w/ the steamship lines and get volume discounts. (This is was I did in my other life... BC... before children)
To determine if you need an import broker, here are the rules:
You must employ the services of an Import Broker if the value of your imported goods is more than $2,000.
At any time when the goods are for resale regardless of the value, you must also use a customs Broker.