A social network!

We need a social network website. The users are able to share text, pictures and videos. Main features: 1) There should be a 3 categories for what user is going to post. User should be able to select only 1 category for his post. There should be a wall or page for each category. So if categories are: Sport, Food, Vacation. There should be 3 public page feed up with one of those categories. Other members who are interested in Food they go to Food page and see all the posts related to Food. For sport and Vacation same. 2) Subscription feature. User X subscribes user Y. Anything that user Y posts, User X somehow will be notified. I don't care what software you use. We are not willing to pay for the software. We need it asap. Maximum 1-2 weeks. WE HAVE A TIGHT BUDGET! LESSER BID, BETTER CHANCE. ONLY PROFESSIONAL FREELANCERS. PM me and make me sure that you are able to do this. Thanks,