Zen-Cart Expert

Hi guys, We're looking for an individual with a very high knowledge in PHP and very familiar with the famous open source Zen-Cart. The shopping cart is already installed on our server. However, we do not need an online store, so below are the customizations that need to be made and our requirements: - Bypass the "sign up" feature (let people buy without signing up with zen-cart) - single page check out required - upsell after check out, a plus - reoccurring billing (for another product other than the first product) - true fulfillment integration including shipping information coming back from the fulfillment Center - ability to pre-populate fields within the cart - ability to place conversion pixels on a thank you page - auto responder data sent upon landing on thank you page - ability to customize receipt - ability to customize branding/look and feel So we are looking for some one who can take Zen-Cart's files and modify its source code to match our requirements. Please get back to me if you are familiar with Zen-Cart and Programming. Thank you