Wordpress Multisite

I need a wordpress multisite expert to convert my existing site into a multisite portal. - allow users to signup for a sub-site using [login to view URL] ([login to view URL] should be themed to main site theme) - Users must pay to signup - happy to provide plugin from [login to view URL] - membership or supporter plugin perhaps - Important - signup is for 1 year term and there are 3 levels, each with different access to different plugins - payment processed through paypal - Once paid, users get a subdomain site eg - [login to view URL] - Users can choose from a number of themes - Users are restricted to the plugins available for their membership level - When created, users sub-site should be populated with a number of standard pages based on their membership level, with dummy content Please point to examples of similar work that you have completed (Must be multisite). If you don't do this you wont be considered.