I'm playing at Thaurissan Horde, having a 525 resto shaman alt need regular flex.

Main is disc priest doing heroic SoO, can swap to this if really need to carry the heals.

But if no need heals then can join as monk dps? (Doesn't really like ele dps / never did enh dps)

Norushen's raid damage can vary. It depends on the raid - whether they know how to prevent the boss damage from getting buffed + picking up dark orbs immediately.