Build a payment service similar to Paypal, but a lot simpler on Netbeans

I need you to design and implement a web-based, multi-user payment service using Java Enterprise Edition (Java EE) technologies. The system is a much-simplified version of PayPal. Through a JSF-based web interface, users should be able to send money to other registered users (e.g. using their registered email address as their unique identifier), request money from other registered users and manage their own account (e.g. look at their recent transactions). Super-users (i.e. admins) should be able to access all user accounts and transactions. Optionally, you can deploy the application on the cloud (e.g. on Amazon AWS, Microsoft Azure, or any similar infrastructure).