I don't get it. You are casting CoT then CotE 10 seconds later, then CoT 15 seconds later. You'll burn up a lot of mana refreshing curses with a long duration.

This is what I use and I like it.

Code:
/castsequence reset=combat Curse of the Elements,null
/use 13
/use 14
/castsequence reset=combat Immolate,Conflagrate,Chaos Bolt,Life Tap,Incinerate,Incinerate,Conflagrate,Immolate,Chaos  Bolt,Conflagrate,Incinerate,Incinerate,Incinerate,Incinerate