Establish a US company with a Paypal merchant account and a bank account

We run and market several websites for African hotels where guests can book and pay online. We need to be able to accept creditcard payments in a fast and affordable way. The job is to establish a US company, set up a bank account and help us register a Paypal Merchant account. The company should be set up in the best tax friendly way. I am Norwegian and can visit the US physically if needed.