I am thinking
Dark Elf ( race bonus on stamina and magicka )
Templar ( Mostly Restoring Light, and 1 spell from Aedric Spear )
Bow Skill line for range dps
1 Hand / Shield for Healing and support dps
that could be viable but i would balance the skills you pick between magika and stamina based skills. this is so you are more efficient in combat with little downtime doing only your "auto" attack (waiting for magika to regen). that's what i found i had to do on my templar. i'm 2H with nuke and heals (didn't take any aedric spear spells.. yet). of course i switch out skills based on the need (ie. solo, healing and maybe even tanking)
I played a Templar bow-healer throughout three beta tests and got into the mid 20s in the last beta. I am currently lvl 15 in early access with a Breton Templar Bow Healer.
This is my current build
When solo PVE:
I have my main weapon slotted as a bow with these skills
(RL) Rushed Ceremony->breath of life
(RL) Restoring aura-->repentance
(RL ult) Rite of passage->Remembrance
(Bow) volley-scorched
(Bow) Poison Arrow->Venom
(Bow) Scatter Shot->Magnum Shot
And my second weapon (still a bow) with this.
(Bow) Poison->Venom
(Bow) Volley->Scorched
(Bow) Scatter->Magnum
(Bow) Arrow Spray->Bombard
(RL) rushed ceremony->breath of life
(RL ult) right of passage->remembrance
Racials-Breton
Light armor affinity
Magnus
Spell resist
In group PVE I switch my second weapon set out for a resto staff and slot these skills
(Resto) Grand Healing-->healing springs
(Resto) Regeneration->mutagen
(Resto) Blessing o Protection-combat prayer
(RL) Rushed Ceremony-BoL
(RL) restoring aura-repentance
(RL ult) Rite of passage-remembrance
With resto passives of
Essence drain
Resto expert
Cycle of life
As I level I will be adding and changing these skills for appropriate situations, but so far this skill set his been amazing and I can take on multiple mobs quite a few levels higher than me and survive, and keep a group alive healing efficiently as well.
I will probably have to tweak this for pvp but I haven't gotten into pvp much yet as I am just trying to level still
*Edit
For my attribute points I have been going
4:2:1 mp:hp:stam
This leaves me short on stamina when I'm soloing and having to resort to auto attacks more often then ideal, but it keeps my mp pool high for personal and group survivability and fits my preference for endgame of being primarily a healer