Social Networking Concept Design

I have a social networking concept website which I am working on that requires a design. My website has the traditional social network features such as making posts, blogging, commenting, posting to know you read this, please start off your bid by telling me your favourite colour videos and photos, and groups and forum features. Furthermore, there will be a section that allows people to upload products they are affiliated with so they can discuss these products, review them, in order to promote them to other users in my online community. A third features is users can upload and sell their courses to other community members. For the above, I require a complete design which incorporates all pages, including, but not limited to: profile, newsfeed. Also, dummy content pertaining to the niche I am involved in needs to be created to see exactly how it will look. Please note, I require only a design. The deliverable should be a design which can be handed over to me so I can give it to my developer so he can code, build and develop the website.