Might be a little tough to see accurate noise due to YT compression and the noise will also come down as you bring the shadows down in post but this should still give you a pretty good idea of what to expect!
Do you happen to know if dynamic range decreases as you increase ISO? For example it looks like ISO 12800 is cleaner than 1600, but do they have the same dynamic range? I can’t find this info anywhere online. Awesome vid btw!