it's doable in pvp gear, but pve is better = easier, simple is that.
You can run LFR to get items from SoO (best number of sockets) and ToT (trinkets + weapons) - its not so hard, so in my CM i would also kick for pvp gea. Ops did i say kick? Yes, but i never take person like that unless he have some goooooood experience in CM (at least few times done gold 9/9)
no offence but if ppl have problem with interupts on pve they are not good pve players and progression.... is hard for them
im wondering how they menaged to kill omnotron