Back end royalty program

Need a website back-end developed for my clients to view their royalty information, stats, appointments, etc. Joomla plugin preferred but not required. Custom software functions: Membership login ·         Individual private member profile pages o   Commission & sales numbers (pulled & sorted from a master group Excel spreadsheet) o   A simple reply form to send a direct message or question about displayed info o   Customized personal downloads (pdf, doc, jpg,audio/video etc.) o   Private calendar for MP/EMR booked interviews & appointments