484337 Professional US Ebay business Accounting services required

Hi, We are operating ebay account in US based in California. Business starts to grow now and before we get into any taxation trouble, we want services of a professional accountant. We need his advise on the best way forward. How to structure our ebay business properly and how to handle incoming/outgoing transactions and how to handle tax filing. So we need someone who is more specialized in handling customers doing business on Ebay. Please note, this is going to be a very long lasting relationship as we are to grow our business to next level and eventually make it very big so we need the right partner from day 1. Thanks Sunny