Better hope to have WG at that time. I'll give you tips.
get DBM
When it says Nova run away. should be 10 yards away from each other I think. type /range to show range if needed before battle.
3 seonds on enraged I'd turn around and head to adds. The enrage add has been changed and it grows huge really fast. Kill asap then return to boss.
Rinse and repeat probably about 4 to 5 times.
25man version you will almost always take damage from Nova. 10man only if you stay close. Rogues can still die while cloak is up (90% resist I think) trust me I learned hard way. Stayed in about 5 nova's and then new run died by first. hah