Yeah, I love this music too, though I thought it was oddly placed; why have such an atmospheric chill tune in a fight where Ishmael is at her most emotionally raw and Ahab is trying to break her spirit one last time? Even understanding the lyrics better, I still think the sense of catharsis would better fit the denouement/credits scene afterwards where Ishmael is looking to the horizon and considering what to do next than the fight itself.
Lccb ish can't clash and isn't fast enough to be reliable with fragile. Also pierce does more damage for the ahab fights. This fight only works if ish moves early in phase 3 to use roseate to prevent the counter from staggering my team.