Design Your Own Tshirt Store NEEDED

I need to have a tshirt store created that lets people deign their own shirt in the web browser. Simalar to spreadshirt.com. In the future I would like to integrate the ability to have customers create their own store and upload their sesigns and be able to sell them at a base price we give them and they can mark them up to what they want and we do all the processing and they get the sifference sent to them in a check once per month. I realize that there are scripts out there that will let me sell custom shirts and let people upload their designs for $200 but I want something very user friendly and unique. The store needes the following Flash application to let someone designh their shirt,pick their shirt size,style and color. The application needs to be built in a way that the design is in realtime. I know this can be done with flash...like on spreaadshirt.com. Site needs shopping cart environment to take orders and must interface with paypal, and [login to view URL] Also needed is the ability for users to create their own stores. Store needs to have a user friendly interface both for customers and designers. Affiliate type program needed so we can offer base price on items and users can mark items to prices they see fit. Affiliate admin area for affiliates as well as us to keep track of affiliate earning and send checks..... Inventory on products would also be nice. UPS integraton for tracking etc. Website design is also needed and would like some sort of template style system so things can be easily changed. Also easy admin section to add products. I do not have alot of money so dont bother if prices are insane. I really would like people with feedbackl cause if you do not have any I WILL NOT choose you for this kind of thing. All money is going to be escrow.