Customize an e-commerce website (Must Have: Knowledge of Paypal API, Social Login API, and Asp.net C# Experience)

Please go to to this website: [login to view URL] I'm planning on purchasing the multi-vendor version, however I'd need someone to do a few customizations. This person must have in depth understanding of Paypal API, C# Programming, ASP.net and prior web development experience. Here are the features I'd like to add/customize: 1) Subscription/Recurring payments for products. (Paypal API Recurring Payments) a- Allow customer to choose which subscription plan they want from a drop down menu for a certain product. [Weekly, Every two weeks, Monthly, Bi-yearly, or Yearly] b- Force the customer to create a profile if purchasing a subscription product. 2) In the customer's profile, add a feature that allows the customer to cancel the item's subscription. When pressing the cancel button, a feedback form should pop up to ask the customer about their experience. 3) Also allow for to send and receive messages to and from the vendor. 4) Social Login with Facebook or Twitter. 5) Offer social discounts by sharing an item to facebook, where the discount automatically gets applied to the customer's cart. 6) Add a specific # of reward points to a customer's profile when signing up for a newsletter. To be successful, the freelancer must have strong knowledge of paypal recurring payments and Paypal API, ASP.net and C# Programming. A well done project will encourage a long-lasting developer relationship with more jobs and higher payments in the future as we grow. Please let me know if these customizations are possible after looking at my requirements and looking at the website above. Thank you.