CUSTOMIZE Opencart module

Hi, we are going to start selling customized products to our clients. We need to work on a product template page (like [login to view URL]) that allows user to customize the product. Have [login to view URL] as reference and especialy [login to view URL] We will have several product types (iphone 4/4s, iPhone 5, iPad, Mugs, tshirts, etc...). Each product type can have several styles (for iPhone 5 we can have 2 or 3 types of cases) The customization can be made of two different ways: - User starts from a blank case and adds images and text. He must be able to rotate, change font, etc... like in [login to view URL] site. - User starts from a case we already have and customizes it. So, we must be able to say if a product is customizable, or not. Product images must be created in real-time, as user changes the case. We must be able to create product types, styles, etc, from admin. We suggest using photoshop smart objects as product canvas, so we can create the styles. Please look at Zazzle for reference. Must be multilingual. This is just phase one....