I don't have this gear... yet - but I do elsewhere, and this is my favorite Priest build:
LEVELS: 87/56
Upper Headgear: Marionette Doll, Marduk Card
Middle Headgear: Empty
Lower Headgear: Cigarette
Armor: Saint's Robe, Marc Card
Weapon: Bible
Sheild: Buckler, Medusa Card
Robe: Muffler, Frilladora Card
Shoes: Shoes, Sohee Card
Accessory: Ring of Appraisal
Accessory: Clip, Cookie Card
Marduk - Immune to the Silence Status
Marc - Immune to the Frozen Status
Medusa - Immune to Stone Curse
Frilladora - Grants use of Cloak Lv.1
Sohee - Maximum SP +15%, SP Regen +3%
Cookie - Inflict 10% more DMG with Holy Light
Strength: 5
Agility: 60
Vitality: 35
Intelligence: 100
Dexterity: 1
Luck: 1
Because my VIT is low, I'm vulnerable to status ailments - but since I've got immunity cards, that worry is gone. I've got enough VIT that I don't have to worry about being one-shotted, while at the same time I can concentrate on my AGI, which helps with my Flee rate so I can dodge more. My INT is high, because I've got an FS skill set, which, along with my Sohee card, allows me to actively buff and heal myself, while at the same time raining down anti-buffs on my enemies.
My offense is lacking, but with my Cookie card and high INT, I've got a little bit of oomph - but I'd need scrolls to back myself up. One of my biggest frustrations in PvP was trying to get off a scroll and to be interrupted and have my scroll used up... but with my high AGI and FS Skills such as Kyrie Eleison, I can shoot off a spell or two without hesitation.
I like cloak. I do. It's a fun skill - and it really helps in WoE to be able to get a Priest by undetected. Plus there's the fact that if you're supporting a party, and you get a bigger mob than you had anticipated and everyone dies, the Priest can cloak until the mob leaves in order to resurrect their party members.
I'm thinking of substituting a Smokie card (Grants use of Lv.1 Hide) for the Cookie card, but I like this build. All I'd need to finish it off would be a Blinker, Incubus Horns or Mini-Glasses/. (Though I'd still need a slotted headgear for my Marduk card)