Web development

I need a new website. I need you to design and build it. We are a Computer Repair Shop in business for over 22 years. Our customers are mainly from the same town or near by towns. We are planning to build a website where our customers can go and sign up for Yearly Service Contracts with yearly Recurring billing. There will be different kinds of service plans that the customer can choose from. Also we will be hiring sales person, who will go find new customers to sign up with the plan. There will be sales person code associated with every sales person, so they can type the code while signing up the customers. Sales person also can apply discount to the service plan, but will controlled by setting what is the maximum % of discount allowed. Customers can also schedule a repair service, which will email to our support team. We would also like to send occasional email promotions to selected or all customers. We also would like to have reporting option for new customers that signed up for a date range, New customers added by Sales person for a specific date range.