Migrate ecommerce site from ASP to PHP based shopping cart

We want to move from our existing ASP ecommerce store to a PHP based one. We prefer using a wordpress plugin (WP Ecommerce or other) as we have experience maintaining Wordpress but are open to suggestions of other shopping cart solutions as well. There will be no new design element involved as the current front end and cart design would have to be ported to the new system. ## Deliverables The existing store is at indianhanger.com. All existing functionality needs to be present in the new store including: Multiple pictures per product Bulk upload Coupons and other promotion options Gift card system Products on Sale Multiple currencies User accounts as well as adding to cart without account creation Integration with Paypal Integration with 1 international credit card payment gateway Integration with 1 Indian credit card payment gateway Category, Subcategory & Vendor wise product segmentation Advanced product filtering (category, vendor, pricing etc) Inventory Management Easily build landing pages for a product set, an event or a vendor automatic shipping calculation and currency selection based on country Good SEO out of the box and SEO friendly URLS XML/RSS feeds of prodcuts that can be fed into google base Flexible and efficient checkout procedure Wishlist newsletter integration (mailchimp) Hide products temporarily inquiry form on product pages Easy Theming Product Rating zoom-in product with mouseover related products The front end design should be the same as the current website (plus some changes our designer is working on but we will not require any design input from the developer). All data (including product details, categoriees, vendors and users will have to be migrated from the old setup to the new one. If you recommend a non WP based solution, please mention your reasons why its a better option. * * *This broadcast message was sent to all bidders on Thursday Jan 27, 2011 3:41:24 AM: The current ASP version of the website has a table heavy interface. Although the frontend design will remain the same, we would like to convert it into a table free (as much as possible) interface with proper separation of design and code. Please ensure that your bids reflect this. Thank you.