Create Website with Shopping Cart

I need someone to help me create a simple website to sell my products (selling approximately 6 items at a time). I will need membership based website (with login function) a shopping cart, but I plan on manually sending an invoice to the customers who order my project. Therefore, I do not need the payment process built into the website. I will need the ability to update my own website afterwards, and a easy-to-use admin section so that i can update with new products, give credit to certain shoppers, and set up "sales periods" ## Deliverables I am attaching a draft sitemap with some example wireframes for reference.