Question on Battle Priest

[Mr. Priest]

Ok so i was in Thors with my friend and i hunted Ring of flame lord and ring of rennosance. So i thought about making a Battle Priest. But i have no idea where to allocate my stats or what gear to get.
My server has donates which goes like this Upper +4 all stats. Middle +5 all stats, Lower +2 all stats. We also just got battle grounds. So please any suggestions would be nice. Thanks =)

[Kawaii]

Battle Priest Hmm. The only thing i could think of is Holy Light and or Magnus Exporsismus.

So Int, Dex, Vit. I've never done BP

[Chimichanga]

I don't know what Gro is.
I used to play ragnarok frontier and i noticed just one battle priest. He utilized a crit build due to gloria. You can try getting a Brave Battle Strategy Book? I think it's a battlegrounds weapon, but I'm not too sure.
One of the following
+10 Giant encyclopedia with a hydra and TG card.
Brave Battle Strategy Book or Valorous Battle Strategy Book (whatever is given by battlegrounds)
Brave Battlefield Morning Star or Glorious Morning Star Valorous Battlefield Morning Star (verbatim)
+10 slicing explosive bloody lunakaligo
+10 double ancient stunner (mainly to hit the dam targets)

I imagine that the rest of the equips would be similar to that of another normal priest.
99/70:
normal build without rings:
Something like 80-90 agi mainly for aspd
20-30vit
70-80str
30 dex
50-60 luck? (depends if you want to go crit)

Pure agi to unlock ifrit rings:
50-60str
50-60dex or 50-60 luk
90-99 agi (maximize aspd)
20-30vit

Just tinker with various builds as I'm sure a custom server likes yours has 10k resets.