From Using and checking the following builds:

https://alcasthq.com/eso-magicka-templar-healer-build-pve/
http://esoacademy.com/builds/the-elder-priest-healer/
http://deltiasgaming.com/eso-templar-pvp-healer/
https://alcasthq.com/eso-magicka-templar-healer-build-pve/#content4

And Mainly from this one:
https://alcasthq.com/eso-magicka-templar-healer-pvp-build-cyrodiil-group/
https://dottzgaming.com/build/heals-and-dreams-magicka-templar-pvp-build/

Vampire:

I keep Vampirism to Level 1 by Drinking a Double Bloody Mara.

Gear set (Before Trails):

THis is the following gear setup before doing the trails:

Monster Set:
Head (Heavy- Infused): Nightflame (Elden Hollow II) or Chokethorn (Elden Hollow I) - Glypth: Truly Superb Glyph of Magicka
Shoulders (Medium - Divine): Nightflame or Chokethorn - Obtained from Maj al-Ragath's chest - Glypth: Truly Superb Glyph of Magicka

Gear:
Chest (Light - Infused): Sanctuary (Banished Cells 1 or 2) or Kagrenac's Hope (Can Only craft this) - Glypth: Truly Superb Glyph of Health
Arms (Light - Divine): Sanctuary (Banished Cells 1 or 2) or Kagrenac's Hope (Can Only craft this) - Glypth: Truly Superb Glyph of Magicka
Leg (Light - Infused): Sanctuary (Banished Cells 1 or 2) or Kagrenac's Hope (Can Only craft this) - Glypth: Truly Superb Glyph of Magicka
Belt (Light - Divine): Sanctuary (Banished Cells 1 or 2) or Kagrenac's Hope (Can Only craft this) - Glypth: Truly Superb Glyph of Magicka
Feet (Light - Divine): Sanctuary (Banished Cells 1 or 2) or Kagrenac's Hope (Can Only craft this) - Glypth: Truly Superb Glyph of Magicka

Jewellery:
Necklace (Arcane): Sanctuary (Banished Cells 1 or 2) or Willpower (Imperial City) - Glypth: Truly Superb Glyph of Magicka Recovery
Rings (Arcane): Sanctuary (Banished Cells 1 or 2) or Willpower (Imperial City) - Glypth: Truly Superb Glyph of Magicka Recovery
Rings (Arcane): Sanctuary (Banished Cells 1 or 2) or Willpower (Imperial City) - Glypth: Truly Superb Glyph of Increase Magical Harm

Staff:
Restoration Staff: Sanctuary (Banished Cells 1 or 2) or Torug's Pact - Glypth: Truly Superb Glyph of Absorb Magicka
Lightning Staff: Sanctuary (Banished Cells 1 or 2) or Torug's Pact (Can Only craft this) - Glypth: Truly Superb Glyph of Shock

Champion Points

For each section (300 & 810) try not going passed the assigned value below but distribution to whenever you see fit.

Champion points [810]
THE MAGE (BLUE)
The Apprentice: 100 Blessed, 100 Elfborn, 14 Spell Erosion, 56 Elemental Expert

THE THIEF (GREEN)
The Shadow: 48 Tumbling, 81 Shadow Ward
The Lover: 64 Arcanist, 11 Tenacity
The Tower: 66 Warlord

THE WARRIOR (RED)
The Lady: 43 Hardy, 43 Elemental Defender, 66 Thick Skinned
The Steed: 66 Ironclad, 52Resistant

Champion points [300]
THE MAGE (BLUE)
The Apprentice: 64 Blessed, 20 Elfborn, 16 Elemental Expert

THE THIEF (GREEN)
The Shadow: 34 Shadow Ward
The Lover: 64 Arcanist
The Tower: 2 Warlord

THE WARRIOR (RED)
The Lady: 23 Hardy, 23 Elemental Defender, 11 Thick Skinned
The Steed: 23 Ironclad, 20 Resistant