Build a stock betting website

We are looking for professional help in creating a responsive website in which users can login, buy credit via paypal or creditcard, play on so called binary options and stock market indices, the website must be capable of calculating results and displaying the end result by user on the frontend and a management system on the backend for payouts, user management, notification tools including marketing tools, such as extra credits, etc. The administration will input the results manually into the backend of the website and the website should calculate all bets against the winning number and manage the results automatically. If you are interested we can have a video conference meeting, where all the details will be explained in full and pricing is negotiable, depending on your capabilities and additional ideas are welcome.