I've been a bit put off by Cata heroics..

Whilst the mages pump out around 20-30k dps, my tank and healer aren't the best - shaman healing seems weak, might just be more though

If I get deadmines, there's a bunch of bosses which seem difficult to box - the first one might be a show stopper if the rotating flame gets me.

I think I've managed SFK before, Halls of Origination I haven't successfully done the lever bit, ZF/ZG I've done a few bosses but not all.. not sure about the end bosses i've read they aren't easy.

Maybe I can run 2 mages so I'm not given robot duty if it's in deadmines.