Modify product attribute OScommerce

I am looking for a php developer experienced with Oscommerce. I need to modify the default option system in a way that admin can add a product attributes to offer products on multiple deals. Once the deal has been selected the customer should be able to choose from a list of product option. I prefer the multiple deals to be available as Radio so that all the deals are visible at one glance. & for the options I prefer checkbox. Example: O 1 egg for $ 2:00 O 3 eggs for $ 5:00 O 6 eggs for $ 10:00 Option value: o RED o GREEN o BLUE o BLACK o YELLOW o PINK o PURPLE When multiple deals as above are offered: 1. The customer should first be able to select a deal 2. select appropriate number of options from the list of options 3. when the customer clicks on add to cart button the number of options ticked must be verified with the deal if the number specified in the deal & number of options ticked doesn’t match then an error to add or remove appropriate number of options should be displayed) if everything is ok then the order should be added to the shopping cart.