i have one this is mine
Gear:
1-59 use all vendor gear to get with Stamps- the 45 SG set isnt worth it because it is used so quickly (Unless you find some in DE runs then use it)
60+ aim for the level 60 SG Set. I currently have all but the gloves and have 12k life and 25k mana, works fine
75+ aim for 75 SG Set, but 75 isnt necessary, some use the 60 set until 90 if their funds are limited, because 90 can be upgraded to 100.
for open slots in your gear, get the Light Atk crystals for more dmg and higher heals! After get life crystals for more life.
Stats:
there are basically 3 options
Full Spr (recommended)- this gives you higher heals by ~300 by level 60 and much more mana.
Full Int- this gives you more chance for crits by ~2% by level 60 and may increase your atk damages minimally, but your a healer, so it isnt needed
1spr/1int- This is a mix of the above. good for those healers who like to get their hands dirty
Skills:
Heal- Max this to level 5 at level 45. As you work your way up to 60 it should be around 8. Once you are 65+ and have at least 4 out of 8 SG set pieces level this to 10. If not, keep it at 9 because you need at least 20k+ Mana to afford level 10 heals comfortably.
fortification- level this to 10 as soon as you can
Actually as I was writing this I just remembered the Heretic Bible, located here xD :
http://dl.dropbox.com/u/6357958/Heretic%20Bible.pdf