ix’zdei

Question: For the Ix’zdei Battle fight in CoP 8.3, is it absolutely necessary to have a BLM? Currently the group I have consists of PLD, WHM, RDM, DRK, SMN, MNK. It is possible to change RDM > PLD, and PLD > BRD (lullaby?) If anyone has done this fight before, and believes the setup above is...