This is my lineup on spells:
Merciful Remedy
Spiritual Remedy
Merciful Light
Merciful Intervention
Mystical Intervention
Undying Life
Elixir of Wulthan
Shining Fortress
Mending Splash
Word of Greater Restoration
Issuance of Mercy
Unified Hand of Emra
Divine Imposition
I have gone into options/keys/category - Spell Casting and set my number pad 1 key to spell gems 1-6. Also the npad 2 key to spell gem 9. Npad 3 to spell gems 7 and 10.
Npad 1 is for single target heals, Npad 2 is for the cursor click raid heal, and Npad 3 is the group heals.
During raids I use my left hand for the Npad keys and move with the mouse.
I setup my Extended Target Window with Warriors first, then Shadow Knights, then Paladins, then pullers/clickers/kiters, then enchanters/bards if they are mezing, then shaman/druids. This depends on the encounter. I leave one space at the end for the Boss because of healing assignments may depend on a rotation based on the Bosses Hit Points.
I start off casting an Assuance of Mercy near Raid and If called for either Tranquil Blessing+Elixir of Wulthan or Celestial Regeneration. I then use the AA abilities Divine Guardian on either Main Tank / off tank or a tank in my group, Divine Avatar and Battle Frenzy on cooldown, Furry of life, Beacon of Life on the Main tanks, Burst of Life on Main Tank, Celestial Rapidity and Focused Celestial Regeneration on cool down. healing in-between each. When healing really gets tuff, or at the beginning I use the AA abilities Intensity of the Resolute, Healing Frenzy and Channeling the Divine for single target and exquisite Benediction for raid. Use these on cool downs after. I use Divine Arbitration, Cleric Epic and Third Spire alternatively. If I don't use Third spire I use Second spire to add healing. First spire if I am DPSing.
DPS setup is :
Merciful Intervention
Mystic Intervention
Unyielding Judgement
Merciful Contravention
Ardent Contravention
Virtuous Contravention
Unyielding Hammer of Zeal
Sound of Wrath or if Undead Sermon of Sanction
Mending Splash
Word of Greater Restoration
Issuance of Mercy
Mark of Shandral
Divine Imposition
I use First Spire on cooldown, Improved Twincast on cool down and If undead use Silent Casting + Improved Twincast + Turn Undead. Use Celestial Hammer on Cooldown.