Athlete Social Networking Portal

I would like to develop a sports portal social networking website where players, teams, coaches, and agents can come together and able to connect with each other. The site will have the ability for the users to register as a free user with limited access and/or as a paid user. Based on the type of the membership a user has they will be able to store videos and photos with their profile, get in contact with other members, coaches, scouts, businesses..ect. I'm open to the platform that is used such as Joomla, Jomsocial, Dolphin, Community Builder, Drupal...ect For best chance of gaining hiring please show examples of previous work similar to the reguested project and site examples below. Similar sites are: [[login to view URL]][1] [[login to view URL]][2] [[login to view URL]][3] [[login to view URL]][4] Thanks!