I see lots of defense/HP/armoretc requirements for Kara, but I was curious if there are any general requirements for tanking Heroic dungeons? I've got the Heavy Clefthoof set, SoNF, Stylin' Purple Hat, and misc. other quest/normal dungeon pieces bringing up my stats, but how far do I need to go to be ready for Heroics?
Also, are all Heroics created equal, or are there easy(ier) ones I can start on to wet my feet a little? I.E. can I go straight to Set. Halls to get my swift flight form, or should i practice somewhere else first?