Custom Wardrobe Builder for CS-Cart

We need an experienced CS-Cart developer to build a Wardrobe Builder. We have an example site which we want to pretty much copy the way it works. It will work by chosing a number of wardrobe doors and wardrobe size. Then in a graphical interface to the side, clicking on the doors will let you choose how many panels to have on the door, what colour it will be and so on. After building the exterior, we also need to ask the customer if they want to build an interior for their wardrobe, and if so continue to that step. Here the user will click on the interior of the wardrobes they built before, and chose from a set selection of interior layouts. Each time a panel is changed, or interior added, we need to show a price for the total. I forsee this as a 'Wardrobe' with many options and modifiers, and the interiors as seperate products - we need to show a list of what they have added and what cost each option is worth that they have selected. Then the customer needs to be able to add the whole lot to their basket in one click. If you need more details or want to see the sample sites they like, please get in touch. We are looking for someone to start next week, and complete within 3 weeks. We cannot afford a delay, please be 100% sure you can do this properly and within time before bidding. Only bid if you can meet the timescale and have used cs-cart before. Would like to see examples of work too if you have any. It must work on the latest version of CS-Cart. No core files must be changed so that the site can safely be updated in the future. Thanks, any questions please ask.