Developing features/customizing openx for ad network script

We have started our ad network based on openx recently. It has all the basic features that an ad netowrk require. Features that we have already developed are : Signup, Login, Self Management system, Bidding System, Geo Targetting, Payment module etc Now we are looking for an experienced programmer who can add some more features like : 1) Customizing Statistics page separately for advertiser and publisher which will contain country break down option and filter option on each column 2) Site skin ad format and zones 3) Auto mapping campaign with zones and de-linking few campaigns (if require) 4) Developing cheat system 5) Default ad and backup ad features for advertiser 6) Optimizing/decreasing load time (will look into this separately) Note: You should only show your interest if you have worked on openx earlier and should have something to show us.