Add Product Flow Prestashop 1.5 redesign

We need a complete redesign of the add product page in the back office area of prestashop (this may require custom fields). We also have a database of categories and other added functionality that needs to be done using this separate database, we are using it to auto link categories to items that are listed. (not much). We have full spec sheet and are ready to go. Please inquire if you have questions regarding project. Basically we need the Add product flow redesigned into a paginated flow eg: add product info (custom fields) > add product image > verify listing > product added. In the process of listing an item the title field should have a separate database to attempt and autopopulate item and automatically lock it into proper category and sub category. if search cannot auto locate product it allows user to manually choose category. We have a database that will have item linked to proper database table, we need to code to have it make this link.