Ajax Homepagebuilder Community

I'm searching for a Script like [login to view URL] Features: - Multilanguage - Ajax/PHP/MySQL based - easy to create new homepages - Guestbook/page - Counter/page - Username as subdomaine -> ex: [login to view URL] - possible to show ad's(google adsense) and to disable ad's on a homepage - Paypal compatibility -> to remove ad's - community features like forum, chat, maybe some flash based games? - module based -> possible to add other modules without change the whole code Budget up-to $250, if needed upto $400 If possible show me your references or demo's? Thanks