You'll cast Cleric before your DoTs
As for Chain Strat you will want to delay it since sure it may buff your initial DoTs but its a party wide tool that will hold more benefit when it falls in line with Trick, Embolden, etc etc and lines up when people reach their ramp up time.

Rouse you will want to use before you Whispering Dawn or else the Rouse will only effect her Embrace.