Social Network Creation

I am looking for an online social network to be created for my business. I am looking for a professional attitude as well as professional skills. Serious inquiries only! I will be taking care of the graphic design of the website, I will have layouts of what I would like to see done coding wise as for the user interface and such. I am looking for good ideas and creativity. Time is not too serious of a factor but the sooner the better. I am working in the 300-600 dollar range. The more cost effective bid will be most appreciated. I have a list of details that will go along with the site and how it will run, so the more profficient you are in coding social networking sites the easier it will be. I am also looking for domain registration as well as hosting for this social networking site. I would like in great detail what I will be recieving. I also need to be given detailed explanation on how to edit, update, and maintain the site myself. I currently work with mac osx Thank You