I would be willing to pay a monthly fee if this thing had cloud support to allow me to view the same journal across different devices and on mobile as well ideally.
Documents\JRNL Entries is the default file path. If you have OneDrive have it back up your documents folder (or you can have it specifically back up JRNL). If you don't have OneDrive you can sign up for a free account with 5 GB of storage. Even if you write a lot it would be years before you would use up that storage using JRNL back ups only. If you have any issues setting it up let me know and I can send links to tutorials.