CMS expert with PHP needed

We are looking for a CMS expert with very good PHP site designing & coding [login to view URL] are looking for 6 page content for our clients (hoping to get 1000's of clients). It will be clusters of 6 page for each client. Those client should able to access a admin area where they can manage their contents of those 6 [login to view URL] pay the monthly service charges by credit card for using our service. Also we need super admin access where we as a company can manage our clients profile and their contact & billing details. I am ok If we need to buy a good CMS solution.I can pay for it. Also If you can find a similar script in [login to view URL] or [login to view URL] and customize for us I am ok with that too.I am looking for quality project in a short time frame.