Move all products from one shop to another including htaccess/redirect

Your job is to crawl the products of "site 1" which is a oscommerce-site - including each products URL & other information - and then import the same produts on "site 2" which is running Prestashop. And setup redirects from sites 1´s urls to site 2´s new product-urls. I have easypopulate installed on "site 1" (oscommerce) which can be used for the export. But there is a slight error in the module. The information I need from site 1 is: URL, product name, SKU, price, image-name, html-description-text & weight(from backend). There are around 4000 products in the shop. When the export from site 1 is completly done and as spreadsheet-file is ready for import then I will edit the list and remove around 20% of the products before we import them into site 2. Lowest bid with best feedback/reviews wins.