Hi
I'm a django/python web application developer. I can build the type of system your after as I have done similar in the past. However, I would like to discuss the graphics design and UI layouts before hand.
I can build the whole system for you but I am not a graphics and web page designer, so I would need some wireframes and graphics to be used for the UI.
I would build your system using django with a choice of DB's, and a full REST api system. The front end would be Angular, with Bootstrap to allow for each changes.
Thanks
Marc Nealer