You will need the following requirements:
-At least 463 iLv in each slot. "your gear is scaled down to that item level so anything above doesn't make much of a difference"
-Food and flasks
-Invis potions "Bring your own if your crossrealm"
-Skype vent or mumble
-A basic understanding of the heroic dungeon boss fights.
-Know your class pull solid dps etc etc
-Be willing to wipe and reset a lot.
Sadly most of the dungeons seem to be really ranged friendly so ranged classes are preferred.
The set up im currently trying to make is.
Tank-Blood death knight
These are not the only classes im taking^ its just what i would prefer.
I have not set up a set raid time yet for these but i will do so once i get the times everyone can be on.
To contact me message me thru skype "joshua.tsang1" or ingame Real ID is zion#1179