Divine Metamagic(Persistant Spell) Mass Lesser Vigor.
Unless your DM rules that the duration limit in the spell overrides the 24 hour nature of Persistant Spell (or your DM rightfully bans Divine Metamagic(Persistant Spell)), that's fast healing 1 all day for the entire party at 5th (Human Cleric: Extend Spell, Persistent Spell, Divine Metamagic(Persistant Spell), base Charisma 14, Eagle's Splendor, Mass Lesser Vigor - cast Eagle's Splendor in the morning to bump your Charisma to 18, and thus your Turning Attempts to the 7 needed for DMM(Persistant Spell), cast DMM(Persistant) Mass Lesser Vigor). Upgrade to Vigorous Circle (fast Healing 3) at 11th. Dispel Magic effects are the bane of the party, and you'll still want the occasional Cure spell for in-combat healing, but as long as you're not ability damaged/drained/similar and you can get your hour of prayer in daily, out of combat healing is not an issue.