casterheal and meleeheal are manaintense
you will have to reg mana all few mobs
this build will save mana due to the damage coming from dots
i would rather make a healing healer which is not a complete fullheal and has maxed out the attacks cleansing flame and chain of light... then always pull 2 to 4 mobs simultanously with cleansing flame and kill them with chain of light (one you have fanaticism-stacks)
the biggest advantage is with that you wont be dependent on anyone and can solo everything with ease
if you lose HP heal yourself with HOT (perpetual healing); holy healing is for the big HP losses or for fast healing
"divine prayer" is the emergency-heal
do not skill the "basic heal", its not worth (devoted plea)
this is what i used for leveling.... its a viable healer for many endgame-activities too, but again, its NOT a fullheal spec
here is a BASIC setup which is the core for the build
http://eu.allodswiki.ru/calc/#!3!113..3.…/A!cembvc/SKVKX
maybe you want to take the circle of healing in 1st grid too for groupheal but if you play solo its almost useless