Canvas ordering system

I am looking for someone to do a full canvas ordering system from uploaded customer's photos which will show how the final product will look like and also forward to the payment via paypal. It will have most of the features like [login to view URL] (please click 'order now' from the left hand side): - ability to upload a photo from customer's computer, also store the photos for future use, - select product type - rolled canvas, stretched canvas - show resolution at selected print size, - select canvas size (width and height in both inches or cm) and show how it will affect image cropping and resolution, (drop down menu i.e. [login to view URL]) - allow for two different thicknesses of the frame (show difference in image) - allow different wrap style (white, colour, photo wrap, mirror) and show how it will look (similar to point101), - allow color/black & white/sepia toning, - calculate the price based on the size, refresh automatically after size changes (also ability to enter any custom size - price will be calculated via formula) - add product to cart, - also checkout with a bridge to paypal. Local administration is required to have the ability to change the prices, introduce new vouchers/sales. Code must be clearly commented for future changes. I would prefer that it is not done in flash. Website is done in Joomla. Please note that some assistance will be required to sort any unforseen issues within first few weeks after task has been completed. Compliance with all web browsers is essential. I would like to have a good communication from the beginning of the project throughout to make sure it is going in the right direction. I would like project to be completed in 3-4 weeks time. (or sooner) Similar systems can be seen at [login to view URL], or [login to view URL], canvas4life.co.uk.