I would be aware that the enrage for the first few kills will be slightly tight, I mean we 3 tank and 3 heal it. Which makes this fight on 10m slightly rough but It didn't take us more than a night for it. One thing you can do which we did (down bot) was have the tank hold her in the middle and set up 4 markers like a square and move around them. Have your group start moving about 1-2 seconds before a storm comes out, we found this kept people from taking more damage then needed. (we had issues with prisons and mist coming out at the exact same time). More or less its about using raid cool downs effectively and having your ranged be on the ball with slimes. If your ranged are slow on killing them its REALLY slows down the fight.
Overall progress
Imm - 6 attempts
Protectors - 5 attempts
Nuro - 3 attempts
Sha - 8 attempts
Galak - 4 attempts
Jugg - 12 attempts
Shamans - 20 attempts
Nazgrim - 3 attempts
Malkorok - 30 attempts
Spoils - 15 attempts in and its looking rough