A1 database migration

We are in the process of a complete e-commerce web site redesign on a new server with a new platform, and a new shopping cart and we require database migration. We need to migrate all of the data currently on our SQL Server, which is currently an ASP .net environment to our new server, which is Red Hat Linux, and mySQL database. Our current e-commerce software is storefront.net. On the our new server, we are switching to x-cart. We require complete database transfer and population including: images, brands/vendors, product short and long descriptions, all product attributes (size, weight, flavor, etc.), categories, prices, shipping weight, volume pricing config, specials, coupons and give certificates, customer information: logins, ship to and built to addresses, order history, etc. Must we very experienced with X-Cart and have previous experience and references developing X-Cart e-commerce sites.