364326 CMS System For an SEO business

I offer multiple SEO services for other companies. Our main stay is building links using web 2.0 sites, article writing, designers and programmers. The features I require are A proper back-end to a professional looking page. The customer must be able to sign-up and create an account. After creating, he must have to confirm the email. After that he must be able to buy credits at fixed rate. He should be able to use the credits to buy any service. There must be a way for the customer to send the details to a standard system thorough a FORM. There should be auto email notification for status updates. There must be ability for the customer to have discounts when buying a lot of services together. Ability for me to add an OTO (one time offer). Ability to have coupon codes. And Sales. Affiliate system and customer support system must be available. All this must be done for many types of services like article submission, video submission, web 2.0 link building, directory submission, blog posting... etc etc PS: I would prefer it if you have done this kind of project before. You must also be available in case I go for extending the features. PPS: The position on our own site for a PHP programmer will also be open for the selected candidate. The terms will be discussed after we have struck a deal. Regards Hari