A site so my buyer can login and order online

Hi! The project: -First my buyer request login/password. After I review the request, password and promo code is sent. - The My buyer logins in through a website. - My buyer, using his/her promo code selects a country , then orders the product online. - When My buyer submits the order, the order goes to secure email. ( The order would go to a specific email assigned base on the country My buyer selects). - I review the orders and confirm to my client via email or telephone call. I should be able to export My buyer's info to a CRM. (I will purchase the CRM if you can suggest a good one to use). Please see attachment for schematics Thank you