I've been toying with this idea for quite a while now. Even started one up. But, so far, the basic layout would look something like such:
Fast Casting: 10
Smiting Spells: 11
Healing: All remaining points
(Plus the added bonus of armors, runes and other such items.)
-Symbole of Wrath
-Shield of judgement
EDITED: Changed a bunch of spells around.