SFK is by far the easiest heroic at the moment. Everything except the ghost packs which come in 4's everything can be pulled in clean, thin pulls.
Damage flying out is very low too, except for the first boss' aoe.
You have to interrupt various casts ( a 10% hp/sec heal and a massive aoe to be exactly ) on the first boss. He also does that aoe strangulate that ticks everyone in the group down to 1 hp (think of a channeled decimate).
Second boss calls those 3 worgen adds and has a -75% heal debuff.
Third boss starts with 2 adds and calls another 2 adds after some seconds, plus he has a frontal cone shadow'ish breath.