Re-doing Of an e-commerce portal

We are seeking some guys who can sort us out with re-doing of an ecommerce portal. Website already exists but here is wad we need: Development of a Shipping Cart CMS - with customized UI and payment gateway integration Backend reporting of all transactions Inventory Management System. Affiliate management system - tracking all sources of traffic and conversion funnel Photo gallery deployment, admin interface and customization User Profiles : Save Items, Share on FB/Twitter, Invite Friends, Referral management system, Gifting solutions and loyalty programs. Website will be disclosed to only winner bidder.