Custom Calculator Coding for Shopify Store

I'm in the process of rebuilding my website and switching it over to the Shopify platform. One of the features from my old site that my customers love is my "ROI" Return on Investment Calculator. This calculator is programmed with a drop-down menu of the products I offer, and the specifications for these products (watts, btu, bulb replacements, etc...) are automatically entered into the calculator when the customer selects them. Competing products are also available in a drop-down menu which auto-enters the specifications into the calculator. The customer then enters some figures (quantity of lights, hours per day in use, the cost of electricity in their state, etc... and at the end the calculator spits out an analysis for them that can be downloaded or printed, and they can request a quote. A working version of a similar calculator can be seen on a competing website (that copied my calculator idea): [login to view URL] I need to have this same functionality back on my new Shopify site. I will design the actual page in photoshop and the calculator in Excel. I will give you all the specifications that are automatically generated by the product drop-down menu and a list of all my products. All you need to do is code the calculator and create the HTML around it. I ONLY accept bids from people that actually read my job postings, look at what I'm after and offer me a proposal based on my job. If you send me a generic email offering your services I won't consider you.