I don't see why people are so against using CS in these fights. I burned through 3 to revive my party yesterday, and by casually playing through the chapter and farming QP/EXP I'll have all three again before I get to the next avenger fight.
I mean, it's not like this has a time limit, might as well enjoy it and abuse your CS (they're kinda pointless if you never use them).
In other news, I'm on chapter 8, will probably do it tonight and move onto chapter 9 tomorrow. Or later in the week, kinda want to farm more QP and EXP at the moment.