Part two: Talents
"Holy Blast" grid

Deep Concentration - cooldown of "bubble" decreased.

Angelic Grace - Reduced mana cost of all spells.

Power of the Pure - improves all healing and holy damage spells

Circle of Healing - great AoE heal, but mana-costly. Also remember that it heals only your party, not a whole raid.

Unshakeable Faith - bonus Proficiency.

Thunderer - a must-have skill.
Heavenly Smite
grants you 3 stacks of
Fanaticism
.
Optional:

Inevitable Punishment - Increased damage of
Chain of light
and
Heavenly Smite
(those are my main damage skills)
"Verdict" Grid

Unbending Will - increased chance for
fanatism
effect.
optionally:

Briliant Faith - low output group heal whenever we get
fanaticism
effect.
"Cleansing Flame" grid

Illuminated Mind - raises vigor.

Eternal Fire - prolongates both
Perpetual Healing
and
Cleansing Flame

Holy Advantage -
Perpetual Healing
and
Cleansing Flame
cost 30% less mana.

Divine Infusion - ...and both have 30% higher critical strike chance

Surge of Faith - ... and are further increased by 15%

Entreaty - emergency self-heal. Remember, dead healer usually means dead party.

True Faith - increases effectiveness of
Holy Rejuvenation/Holly Healing
, and additionally reduces cooldown of our emergency
Divine Prayer
.

Unshakable Faith - +12 to proficiency.

Divine Foresight - very important skill. It places effect on friendly target (not need to be in same party!) that heals it significantly when it drops to low HP. Kind of "emergency heal".

Sacred Blessing - as I wrote before, Holy Healing is one of our main skills, so let's raise its effectiveness even more.
optional:

Blaze of Faith - Cleansing Flame gets 40% chance to increase holy damage (
Chain of Light
)

Inquisitor - improves most healing skills when used on "energy(physical)" target, and improves damage to "mana(magical)" targets

Celestial Light - another HoT, but due to low output it has low usability, maybe to heal a mage or summoner...