PHP Assignment Auction Website

I am looking for a complete peer to peer auction website that functions as a trading website between two parties that want to trade money for assignments. I will need both design and coding for this project. Features of the website will include: -User registration and security system -Assignment posting system (Including file uploading and time calculations -Due dates, end of bidding time, etc...)- -Assignment bidding system -Tutor grading module- -Payment and escrow system - -Dispute system -Messaging system for all users to communicate with each other privately -Tight security framework where all users stay anonymous and no unregistered members can view anything- No access to website from search engines. -Administrative Section: Must be able to control all aspects of the website including all posts and members. -Search/Categorizing functions As you can see; there is not much complicated features. Web 2.0 must be used throughout website. All form properties must utilize AJAX or Javascript. Website should reload as little as possible. Design: I am looking for a design with as little graphics as possible except for maybe icons. Very clean and organized but **attractive**. FAST LOADING is a must.