To get great and sustainable DPS, >>> ABC <<<

Always
Be
Casting

Firestarter and thundercloud procs are nice and definitely help, but you generate NO DPS if you aren't casting anything. Thundercloud procs come from a 5% chance on a DoT, not much we can do to control that one, RNGeesus owns it.

Firestarter is a 40% chance to activate on a successful hit. There are times in my astral rotation where I have gotten 4/5 firestarter procs, and others where i have gotten nothing or just 1. Accuracy might help here, due to the wording of successful hit. Crit is nice as if and when it does pop you have a good chance of getting the big numbaz on it. I usually don't Raging Strikes until after the first fire is cast when in astral, cos I want that proc, if it does happen right away to be juicy.