an app similar to olx

Hello Greetings! From the online spec , what we understood that, need to build a web app like OLX , where seller can post their adds and buyers can contact them to buy the products. You have the design ready , we need to code the business logic. Question --- Are UI ready for the pages ? --- Do you have any platform preference to be used for business logic development ? We can do it using either custom PHP or any PHP MVC like Cake, CI etc. We are ready to go ahead immediately. Please let us know if we can have a skype discussion to clarify more doubts and specs

I have just completed project for online classifieds. to see screen shots, please visit my portfolio in my profile.