They have toned down AK and it drops i55 gear now so it is not much harder than WP...both are fairly easy. I would think if you are truly i60 in the right gear (have seen tanks wearing caster gear...no joke!) then you should be just fine....for the HM Dungeons though I would have some DL going in there or it could be rough. Copperbell is the easier mechanics than the other two just FYI. I would get into and unlock CT as soon as possible though because you get 200 philo and 50 Myth plus ilv80 gear drop once per week...much better to farm this ASAP when you can survive well enough.