Concentration above anything else - if you heal in combat you will get hit and it makes the difference between life and death.
Zen archery is brilliant for those clerics who stay back, also consider "eschew" as it means you don’t have to bring spell ingredients.
Spellcraft is another personal favourite - especially if you are as curious as me.
Depending on armour and role I would also take tumble under consideration. If you are not going to be wearing much armour, but still trying to heal in combat, it is very useful.
Given your character I agree on heal.
Playing a cleric is often a question of hats. You have personal motivations and you have the duties of a cleric of your faith. Sometimes these two roles conflict, but that can make excellent roleplaying. Just remember to ask yourself the two questions. What will I do as (faithful) priest; and then follow with "what will my character think personally". Also, to question, ponder and doubt are integral parts of faith. I doubt it would be different in a roleplaying world.
Finally for some reason, I always end up playing clerics and in my experience people have strong views of what clerics should and shouldn’t do - especially if they don’t play clerics themselves. So don’t worry if people disagree with you – as long as you play your character faithfully.
