Nice find @beerfaced! Paulownia has a janka rating of 1,330, which is pretty soft and similar in scale to pine and Western red Cedar. So FWIW, these were my cedar setting and they might be a good starting point. (I can’t remember how or why I settled on these setting though, so take that for what it’s worth. lol)
And in case you don’t know what the “Janka Scale” is, here ya go.