Coffee Website

We are looking to have a website built for our coffee export corporation. It must allow people to log into their accounts and be able to purchase coffee through our website. Each of the individual farms that we deal with must include its own profile, comments section and the ability to view and purchase different coffee from each farm in some type of drop down menu. We want this site to be really sleek and easy to navigate and with no confusion. As of now we only need the addition of a handful of coffee plantation profiles, but we would like farmers to be able to make their own and have the website already updated. The main navigation tool used to navigate from farm to farm would be a world map with pins on it. You can select a pin and the profile for the farm will come up with the ability to read about it, add photos, make comments, rate the coffee, and purchase the coffee.