If using 2 tanks, and if available, a prot warr makes the adds very easy to OT, they are stunnable. Its not necessary to push 2nd phase before 2nd green vial, and I'd advice against it, makes 2nd phase unnecessarily harder. Also, the 2nd phase starts at 25%, not 20% like some guides say, at least in 10m.
The abilities you must interrupt are split in a way you only need 1 kicker for each, with an Arcane mage or CoT makes kicking very easy.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity. - Albert Einstein