Here's what I usually do.
- Drop the damn totems.
- Unleash Elements as we're moving in to the boss.
- Flame Shock.
- Stormstrike (by this time you should be close enough for this).
- Pop trinkets --> Feral Spirit (10 secs into the fight should activate all procs / trinks).
- Lava Lash at 5 stacks.
Then just Lava Lash every time Searing Flames reach 5 stacks, Lightning Bolt every time Maelstrom reach 5 stacks, drop Searing Totem every minute (or if the boss moved), Unleash Elements and Flame Shock (or Earth Shock without UE buff) every time it's off cd, etc.

