Prebuild combos for adds and keep spirits within ready for adds as well.

Flash is food for hate use it. Its ok to save CoS a few seconds if an add is about to pop so it hits 2+ mobs. FoF is awesome use it every chance you get.

Stagger your CDs and use them all.

Learn to stance dance. Shield oath cripples your DPS but Sword oath makes you very competitive. If its safe to be in Sword oarth for at least 3 GCDs do it.