| Kirk Stiles |
Ok, I'm 5 years late to the discussion but,IMHO, a Warpriest is not a good healer. Slower spell progression than clerics and far fewer channels than a cleric. They make great tanks, especially if you save your healing spells for yourself.
Consider a cleric that worships Shelyn. Use her favored weapon (Glaive) because it has reach (10'). That means you get an Attack of Opportunity before a medium creature can hit you (unless your foe also uses a reach weapon).
As one of your domains, take Defense (Subdomain of Protection). Now you can cast Shield on yourself as a Domain spell! +4 to your AC helps since you use a 2 handed weapon.
If you really want to "score", take a dip into fighter (preferably at 1st level). You now have access (for free) to heavy armor. As a fighter you get 2 feats at 1st level (3 if human). Take Power Attack and Furious Focus. With heavy armor you have a better AC and those two feats allow you to dish out nasty damage.
A decent DRX coupled with Combat Reflexes means you get a LOT of Attacks of Opportunity. The bad guys won't want to get close to you.