LinkedIn Clone for Vertical Market (Games)

I am looking for a complete website similar to LinkedIn (without some of the advanced features). This will not support ALL industries, just one particular vertical market - Games and Entertainment Professionals. Key required features: + Multiple membership levels (free, silver, gold, platinum) + Paypal integration (othe payment methods would also be nice) + People --- My Profile --- Edit/View Profile --- Add/Edit/Remove Job Info --- Add/Accept/Remove Connections (add via email or thru an Introduction) --- Import Connections from AOL, Gmail, Yahoo, LinkedIn, Facebook --- Search People by Skills, Name, Location, Company, etc. + Companies --- Add/Edit/Remove Company (only available to Admin) --- Search Companies by name, Location, etc. + Jobs --- Add/Edit/Remove Jobs (only available to Admin or via paid job listings) --- Search Jobs by position, location, company, etc. + Games --- Add/Edit/Remove Game (available to all users, but must be verified before showing up in searchs). --- Search Games by Name, Year, Platform, etc. The list above is not exhaustive, please review [login to view URL] to get a good idea the remaining features. Ideally, there will have an Admin section where I can customize various features and content (something like phpBB's Admin panel). The more the site is customizable the more likely I will accept your bid over others, regardless of the bid amount. I do not mind having to hand edit some php scripts to get this the way I want, but having a robust Admin Control Panel is definitely preferred. Another nice addition (not required) would be the ability to extend the sites functionality thru Modules or Plug-Ins. There are some social sites (more like Facebook and less like LinkedIn) that have the type of Module support I am hoping for. Please see: [login to view URL] for a good example of a social network that supports additional modules. Ideally there will be a straight forward install script where I specify the database server, name and password and perhaps a few other pieces of important info (like site name). Preference to companies that have existing LinkedIn style demos that I can look at before accepting a winning bid. In this price range I expect the winner will be leveraging off an existing set of scripts with modifications as needed to get the site I desire.