Content Managment system

I am looking for a programmer who has experience in coldfusion and CMS development to develop a content mangement system. I would like a clone of the membergate content management system which is at www.membergate.com. Please look at the demo and exam it carefully. I would like all the same features. I require 4 different versions of the CMS which are: Startup Version For use on a single site (URL), with up to 1000 site members/subscribers and 1000 content pages. MS-Access database. Standard Version For use on a single site (URL), with up to 5000 site members/subscribers and 5000 content pages. MS-Access or SQL database. Enterprise Version For use on a single site (URL), with up to 15,000 site members/subscribers and 15,000 content pages. SQL database. Global Version For use on a single site (URL), with an unlimited number of members/subscribers, and unlimited number of content pages. SQL database. Payment to the successful bidder will be made by escrow. Serious bidders only please.