Or you could just use user.js and not have to change every setting manually each time you start from scratch.
I am still in position where I need to put some small pipeline to automatically download latest + merge my stuff and deploy, but even if it's manual every month or two it's not too bad.
- browser.download.dir
- browser.helperApps.neverAsk.saveToDisk
And instead of making a "google doc" a plaintext file would be better.