Now that i think about it, i dont know why im arguing lol, i was thinking of this as a PvP matter and completely forgot this was a dungeon build. I agree with your whole build for PvE. (Healing Word sucks in Dungeons)
I totally agree but my opinion on healing word is: Even with the 15second cooldown it only has like a 4second cooldown when you use it with divinity making it possible to heal like every 4 seconds aslong as you got the pips, and it does not even drain your stacks on the normal Healing Word cast