Website Rebuild

I need one of my websites rebuilt, and am looking for a detailed quote. It is a online printing store, where a customer selects a print they want enlarged. There is only one product, with about 500 different size combinations [i.e. 25x25cm, 25x30cm, 30x40cm...]. Each product costs a different amount. I have had this done cheaply before, and am now looking to upgrade it to a powerful system. The steps to order would be; - Select Size(s) - Upload picture(s) - PREVIEW PICTURE [automatically shows rough preview of how it will looked cropped. I.e. if someone uploads a picture at a ratio of 1:1.33, but selects a size of 50x50cm, I want a box over the photo to show that it will be cropped]. - Enter shipping details - Select Payment method - Checkout The site needs to be able to handle coupon codes [thousands of them], which when entered, will revert a product to $0, or take a fixed price off the item. The coupon capabilities must be easy to upload in bulk, and be flexible [i.e. it only makes one size $0, it only takes off say $60 on any product over $100] and so on. I need to be able to seamlessly download the orders. Preferabley with a click of a button, that brings up a zip file called the persons name + the order reference, and inside it contains the image(s) + shipping address in a text file. I want the image name to contain the image size the person wants printed. The cms must be very strong, so texts in the pages can be edited easily. I can provide my current site link to give you an example of how it currently is. I need a company with a strong portfolio, please do not big if you do not have much feedback or can not handle the project. I need it done in a fair amount of time, preferably this would be your sole project. Please provide an eta. Regards,