wine shop multilanguage e-commerce opencart

[login to view URL] (this is my layout) For wine shop i need an multilanguage e-commerce with opencart Frontend and backend. Register page, login page (facebook, Twitter) I want to add some descriptions. The person dont could but only a single bottle of wine. Min. 6 bottles must be add in the cart. Our core business is wine selections because we have a lot of wine stores in the world but nobody give you an clear suggestions and opinion. We have to types of categories. single bottles and wine collections (example: red wine, white wine). the user could checkout only if they have select 6 bottles. I hope that would be interesting for our bid.