yeah, try iso 1250 at f4. You can try this method any night, don't need the milky way and look at the results Play around with the iso and time. Could even try longer.
Are you on a full frame or crop camera?
Good point re trying at night even without the MW to practice getting the foreground right. I use a crop sensor 7D Mark II (with a Rokinon 10mm F2.8 lens for night images).