Well i don't know your equip but you should run Blood Furnace until you got Diamond-Core Sledgehammer (http://www.wowhead.com/?item=24384) from 1st Boss.
After that you could run Slave Pens / Underbog and at 64 Mana Tombs.

make sure you have Watershield and Flametongue Weapon on Shamans and Blessing of Sanctuary and Righteous Fury on Pally active.
I also seperate my LB and CL and my keys look like. My Pally is set as Focus for my Shamans.

Pally
1
/startattack
/castrandom Consecration, Hammer of Wrath, Avenging Wrath, Holy Shield, Righteous Defense
2
Seal of Wisdom
3
Hammer of Justice
4
Judgement of Wisdom (or Light depends on Melee Mobs)

Shamans
1
/cast [target=focustarget] Lightning Bolt
2
/cast [target=focustarget] Chain Lightning
3
/cast [target=focus] [target=focustargettarget] [target=focustarget] Chain Healing
4
/castsequence [target=focustarget] Earth Shock, Flame Shock, Frost Shock

i even run this setup on lvl70 an heroics!