Ads exchange (banner / text exchange) ratio based

I need a PHP based system concepted on Ads exchange script. A ratio based system made for the banner exchange script. The script must be made on a Level base: Level 1 - under 10000 viewes/ day Level 2 - under 50000 viewes/ day ...till Level 5 - over 1000 000 views/day. The levels must change automatic from a level to another level for the users! The script must have Admin panel and user panel. The user panel must have for the users to choose from the types of account, one Standard and the second Premium. Other details i will send when i choose the winner of this project!