Outside of Aria team, is Astral usable on Nangong?

My Nangong has her sig so her AM is maxed out

For my Alice Nangong Yuzuha team, I've been using Freedom blues because it has really good subs, and she can easily proc corruptions on Sweeper without much thought due to all the buildup buffs. Even without 4pc phaethon, her personal damage is still very high at ~20% minimum.

If I replace freedom with astral, Alice gets a major boost of at least 2 stacks in each stun. Would it be worth risking less corruptions, or can her sig bruteforce it?