I'm starting an online business that will sell subscriptions to a restricted area of my website. On the restricted area of my website will be information for clients to read. However, the information will need to be published at a certain time and removed at a certain time from the restricted area, but should always be stored in a back-end database I that I can edit (preferably in Excel, then upload an updated version to the server after edits are made). Does anyone know of a Joomla component that can do this?