Website app

I would like a bid on a web app to add on to our site [login to view URL] which is a joomla 3 site with community builder. We are seeking to build a donation reward system for our supporters . we saw this site model and it describes what we want to do albeit on a smaller scale . we want to use our website for the "value" received for the donation . It needs to track and distribute all funds automatically with a log In tracking by donators to see how their refferals are doing . and keep a account bank that can be accessed when withdrawals are needed please see the site to understand the idea . we are seeking only the core system to integrate the donation system and reward to our own subscribers to start. website as model is [login to view URL] this video shows how the system works [login to view URL] then just working accounting pages to display the information to the subscribers and the integration into our site membership. would like to see a stand alone model before integration full integration