Webiste built with API integation

I need a Adult Novelty store which will have the product details from the API. website is hosted on Ipage. Domain is available.
Website should be turn key website which will
1. Update the Prices using API everyday
2. Allow customer to order and place order
3. Place order on the Wholesaler API and track shipping details
4. Accept Paypal and Credit Card using Square API
5. Add customers to Mailchimp account