Bar :
http://i.imgur.com/jKQ4589.png
Extra notes.
I'm using G13 as well.
So fast reuse skill I did bind to G13 keys.
Slow reuse or not really critical are on top line or just not bind (like mass rez ) and I do click them :)
There are few skills on mine 10th bar what I flip during buff (mana gain/augment skills / pet soulshot etc)
Healer SS is nice to play in PvE.
As you have 1 target and party rebirth + mana gain you should be ok with MP.
Your natural huge M attack make possible exp solo almost like nuker.
To be efficient use inqustor + summon (remember about pet soulshots)
About party.
Healing as was said above (normal 1 target heal is almost useless).
Remember to cast noble on all party members or your iss run out of MP rebuffing all the time after dead.
Use Lumi debuff on target.
What to do with other players:
Nukers - always insist to use BtM
Daggers - ask to not spam single target skills ... when you are in AoE party.
Tank - if he insist to use Vanguard pretending be DD and consuming MP, just ignore him let him run without MP :)
Summoners - ignore his MP - they don't need it :)
ISS - keep his MP at some level or he can't cast some high MP skills.
When your MP is critically low and you miss 1 min to rebirth - ask him to heal.
Archers - some of them like to trigger skills, going next to source of dmg. If you cant heal them up, tell them to step back.
When you going to do rebirth, say it to let other come to range.
Real mastery is to play in 2 healers in party, to not cast all skills together(*)
To do it, best is TS/vent :)
(*) or to not use skills when other just remove effect.