I have part developed the application which is currently housing all our customer subscription contracts, linksbthem to expected supplier billing values and recurring revenue streams that need to be billed monthly, quarterly or annualy. Now need some expert help in really fine tuning the app and getting some cool features out of it such as automatic invoice generation by reviewing the list of recurring revenue streams within the app, deciding who and what needs billing then pushing the invoices out either as a csv report to upload into our accounting system or via an API interface into our accounting system.