Oscommerce Modifications & Express Checkout

*** Only experienced OScommerce experts with good communication skills need apply. *** I have a modified v2.2 RC2a Oscommerce store that is nearly complete. I need assistance with: 1. Catalog product page features – display of product options and price 2. Shopping Cart – installation of shipping calculator 3. Checkout – integration of an expressed/one-page checkout Greater detail about the project is provided on the attached files. Please view attachments and let me know your thoughts and any questions. Please communicate in your bid that you understand the project. Also, provide examples of your OSC work, especially express checkout installations. Modifications are to be made to a copy of the site. You must be able to keep track of the modifications in order to relay them to me so I can successfully implement them. If you don’t have considerable OSC experience, please do not bid. Bids that simply state "pick me" or "let's get started" without communicating that the bidder understands the project will not be considered. I have additional projects for the candidate who can SUCCESSFULLY and QUICKLY complete this project. I look forward to hearing from you.