[Aaron]

Here is how I canni-dance:
(others may have a better way of doing it)

Cannibalize is my 3rd spell slot.

Canni macro is my 3rd hotkey and reads as follows:
/cast 3
/pause 25
/sit

I just hit my canni macro, without watching ticks. Sometimes I fizzle, but I have enough time before /sit that I can Alt+3 and cast Canni before I sit even with a fizzle.

Note this time works for Canni 3...YMMV.