Using a couple of ISboxer 'step' functions, a couple of bar buttons and some castsequence null macros it should be possible to get reasonably good dps.
Should that fail, I might have to experiment with 1 button for dots and 1 for nuke/filler spells. With the oceanic latency I run, castsequences have about half a second per cast of dps loss.

As someone else posted earlier, I'm still under the impression that automation is 1 button press to more than 1 action. Going by 1 button press to 1 action, using isboxer steps to determine the order of buttons getting pressed might be ok.