We have already done this type of Project. We are a team of IIT - IIMs Alumnis Start up with a Reasonable Price Offering and expert in web designing, Software Development, database architecture and designing and can handles the projects like this very easily.
We will loved to hear from you over more details over the email and willing to work in long term.
We have bidded as per your requiremeny as you need the Chatting Features which is Live. Chatting feature is costly else rest, we can do in a lesser. Drop me a mail folk.
Thanks
Swanky Team