Need a PHP MySQL site developed see attachment

Looking for a design team to work with me in creating, designing and launching my website. A simple PHP / MySQL auction type site that needs to have paypal installed so users can exchange money via payal. One user will post a listing, while other users will bid for this listing, then the user who posted will be able to choose the bid they want, based on price and user ratings. Users will then be able to rate one another on the experience for future users to get instant referrals. I want this site to remain very simple, similar to craigslist. Also I want it to be free. I would like to allocate space on the page down the road to integrate advertisement. I would also like the site to be search engine optimized so people looking for the items on my site can find them on the major search engines. The site will have 60 categories and about 600 locations. See attachment for further details. I will send a more detailed file once I have a design team on board who signs a non-compete agreement, the attachement has all the information you will need to price the site. All in all I want the site to look and feel like craigslist, but with some other features mentioned above (bidding, paypal, etc). Also scalability and future customization is a must. Thanks for looking at my project and feel free to let me know if you have any questions. Thanks, BlueRockTalk