83003 Elance(ish) site

This site needs to have the features and script of Elance ... The buyer/user questionaire will extensive, some information will have to be made available for internal public search such as profiles and so on, Payment and final project cost calculation will have to be easy to adjust and fine tune, please keep that function as simple as possible, DB stucture must be simple and able to be integrated with the other site user db We will need to look at the strength of user qualifaction apart from email confirmation and validation Manager controls must be browser based. I need confirmation, that what i am buying is an entire, flawless, tested script, and fully operational. I need to make sure that u are using PHP and MySQL. You will also supply me with all the necessary documentation You must be willing to support your product.