Modify PHP Auction Script for addition of features in it !! (Code changes)

Hello, We have an auction script, that we would like to modify as per our requirement. We are looking for someone who can add new features (using PHP) - total 8 features (features like adding per seat value, setting max price per auction, user stats, sample auctions, etc.) More information of what exactly needs to be changed from code and style perspective will be shared with the Bid Winner. Thanks..