OSCOMMERCE / CS-CART exprtize needed for tailoring website

Please DOWNLOAD and READ the attached document before bidding. Bids without reading the requirement document would simply be deleted (When you read the document you know why). I am looking for a right candidate and not for a fast bidder! You need to build a tailoring design tool to design shirts, overcoats, jackets etc. Some of the tasks include: 1. User can select a fabric on the design tool page. 2. User can choose Shirt options on design tool page 3. User can choose measurements on design tool page (see measurements section of reference site for more idea) 4. User can save design tool anytime and continue in future anytime (see save button). 5. User can load any saved design (see Load button) 6. User can switch into next and previous options they might have already been completed (See NEXT and PREVIOUS button) 7. All selections would be added to shopping cart and shown everywhere in the site including viewing orders in admin section. Some part of it is already working which you can see when adding/editing item to cart at [login to view URL] or at shopping cart page. With the new design tool in question user would click on a shopping cart item (a new link Edit in Design Tool would be added to each item in shopping cart page) to edit and then would be send to design tool page to update the design options. The currently existing options in the design tool would keep working as it is right now.