if you cleared up to chess after curator it's advisable to just do a few attempts at prince. once respawn sets in just do aran if you want. aran is harder than prince btw.

tips for aran:

know what to do for each of his abilities.
flame wreathe = don't move
arcane explosion = run out asap
blizzard = look where he does a single frostbolt before his blizzard and run to the opposite side and then follow on the edge of the blizzard.

other than that kick/pummel his frostbolt and fireball. do not interrupt his arcane missiles or he would run around and that could screw up healers etc if he gets near and gets silenced.

healers need to heal people who are getting arcane missiles fast coz its the main source of death, just assist aran whenever he starts casting it.

at 40% he will summon 4 water elemental adds. banish/fear them and keep dps'ing aran. if aran's mana gets low he will aoe sheep and pyro for 7.5k. just heal up afterwards and go on as usual

hey, being able to put it on paper doesn't really mean we can implement it flawlessly

clearing to prince sucks, but at least try him whenever you cleared up to chess since it is only 3 pulls to prince so don't miss the chance to have a few attempts.

3 healers is pretty much what you need for all the encounters in kara. dps shouldn't be gimped with 3 healers. standard grouping for all the encounters should be MT,OT, 3 healers and the rest DPS.

try to burn cooldowns at the start so that the adds die faster. the mana consumption for moroes is heavy at first coz of the 4 adds then it gets slow once adds are down and handled. it gets heavy again after awhile coz people needs to be healed from garrote damage