Open Cart and networking marketing project development

Have a open cart store.. want to integrate Network marketing concept. The cart is under customization with a responsive [html5], should not altered with that. You will have to make the site mobile friendly. >> MVC MODEL with Latest php version, will not accept below 5.1 - 5.2. >> Custom Designed CODE without ENCRYPTION The Job Description & Flow: 1. Understanding the concept of networking MLM plan. 2. Planning & Development of software 3. Software Features will be same as [login to view URL] >>>> SAME + ADDITIONAL [ documented - will send later] 4. Complete independent software except front end. [Release of code with partial payment] 5. Integration with the Products and existing developed cart >> WORK LOAD 6. Complete Testing 7. Delivery 8. 6 month support for the developed / existing code - Will pay for extra Additional WORK. I want everything in the features.. FEW features might be added during the development. I WILL ASK TO MAKE CHANGES MANY TIMES IN THE CODE> THE DEVELOPER SHOULD NOT GET IRRITATED. >> WILL Accept the Application without ANY ERROR / BUG. >>>>>>>>>>>>>> CONSIDER THE POINT. >> Fast Delivery - 15 - 18 Days Please read out the terms and conditions, otherwise don't bid here. DON"T BID OVER THE BUDGET, Directly neglected. Thanks >>