Honestly, Conflagration need to be delt with as they come. Knowing the general timing is good but don't bother tracking it like how you would do with death sentence. Reason is conflagration can be delt with even with human errors, other mechanics like death sentence can't afford much human erorrs as ded main tank is ded.

Your group will get used to it and be quite responsive to it with enough practice, that is my opinion anyway.