Work on my Multivendor Marketplace.

I need the following and please read and understand before you drop a quote. Enable paid subscription on Vendor registration, not user registration but vendors registration only. When a vendor is registering, it would request for the vendor's full information and then payment to be a vendor. When the payment goes through, the vendor's account is automatically approved and activated. Payment is valid for 30 days only after which it expires. I need someone to work on my multivendor market place website and enable monthly subscription opn the site with a monthly payment plan. Each vendor is to pay a certain amounth which is renewable each month or the store would stop to [login to view URL] note that only vendors are to pay the monthly fee. Each vendor would also automatically receive a referal link in the email to enable the vendor invite other persons to the store and it would be counted for the vendor as how many people he or she has brought for a 20% bonus of the month fee for 3 months only. By this, for everyone who signs up under a vendors refferal link, it would be counted for the vendor. Increase the number of categories and enable the vendors to have an automated invoice for products purchased.