You want to be over 500 by a significant margin in phase 1 and 2 - most groups will do the strat such that the melee have near 100% uptime as they do the most single damage.

Just blow everything at the start, if you need a good opener I like to do
SE > IR BFB > GS > Suiton > DE > Potion > SE > TA + Kassatsu > GS > Raiton > AE > Mug + Jugulate > SE > SF > Mutilate, then rotate like normal not letting anything fall off.

If your warrior opens with Storms Eye, Change this to SE > SF, keeping everything else the same, except throwing in 2 AE's instead of SE > DE and SE > SF