Be careful doing this though, there's a reason Tor Browser exists and it is because it's very hard to do anonimity over Tor right on a default browser.

Granted, Tor tries to upstream as much as it reasonably can to FF, but there's still large differences in defaults that could give away (some bits of) your identity.

See this comment first, not mine but might as well be https://news.ycombinator.com/item?id=24853678

It's all baby steps. I don't expect to be fully anonymous this way, just like I know my current setup does not foil more sophisticated tracking.