Here is a mini guide of p1 and p2:

P1: I heal left ES

Mt pulls, auto attack, breath:
regen, cure 2.
Mega flare followed by breath, then flatten then 3 breaths:
divine seal, stack (if needed) medica 2, cure 2 the tank, immediately ss mt for flatten, cure1 or 2 the followup breaths.
Earth shaker, breath:
Regen the player. Time ur cure1/2 then immediately cure 2 the mt.

Repeat till giga flare. If u follow the above u just need 1 cure 3 before giga to top up everyone. So... Just stack behind baha during giga cast and top up with 1 cure 3.