Lost Cure IV is truly nuts isn't it. It is bit more realistic to pretend you would be stuck with Lost Cure I, II and III. And anyway, while you can pace yourself by the boss mechanics, you cannot pace yourself to other people taking damage at random.

I mean, what is the fantasy here? Would people blink if you just made healing playing BLM until it is heal-o-clock in the trial schedule and you hit "heal everyone" button few times and then go back to firing the copycat RDM/BLM/SMN rotation?