Yes, it is doable. I can have it ready in 3 days. This price is for template based social network - this includes features like music and video upload, chat, forum besides the regular features (friend adding, etc.). I can also arrange the hosting for free (but you would have to allow google adwords on your social networking web site, and to include a subdomain in your url). Also i can send you some examples of the work (again, template based social networks sites).