Create a BigCommerce store using an existing Prostores site design & data

Must have experience with BigCommerce. Currently our site is in Prostores and we want to migrate just this one category to a BigCommerce site: [login to view URL] The new BigCommerce site is going to be a specialty micro-niche-site that will have the products from just that one category (and it's subcategories) of our prostores site ([login to view URL]): Migrate all product data for the 250 products in the category: [login to view URL] The subcategories of that prostores-store category will be the main categories of the bigcommerce site, and the second-level subcategories of [login to view URL] will be the subcategories of the bigcommerce store. We want the design to be the same as the design on [login to view URL], including the header with its images that link to categories' pages. The front page should be images of the categories with links to the categories' pages. Migrate related-products associations, and category/subcategory associations of each product. Migrate the prices, weights and all product details. Setup all shopping cart functionality.