1 should be enough. Also make sure to cover the TA portion as well (you want Olivia’s upgraded S2 up ASAP). I’d use Gateway Star Sword or a lv4 awakened Ichigo.
Galleon (just be careful in Fediel&Lu Woh phase against the "click 5 skills"(Galleon doesn't have many skills to click) and "land 10 debuffs" omen (since you have 2-4 less debuffs).