Do i need to DPS?

[Sleigh]

Sounds like you are in hurry to clear the content. Why not role with 5 dps's, 1 healer and 2 tanks if you feel that the dps checks are to difficult to get past. A healers main job is to heal anything else is just sprinkles on the cup cakes.

If "in a hurry" is before they raise the iLVL cap or add echo, then sure. Otherwise it's not really in the cards to beat something like A4S with just the hopes and dreams of 4 DPS.

It sounds like in your universe only DPS should do good damage and SE has molded their raids around this fact ... unfortunately for the less stoic healers/tanks out there, that's not what the devs went for, this time around.