As long as you have enough Luk to equip everything you should be okay. I'd recommend having 35 Luk as a maximum. As you're a Priest you won't be dealing much damage. They become completely and strictly a support class. That said, they can still attack, however their 99% use is just Holy Symbol and Bless/Advanced Bless.
Any extra Luk can be obtained from potential (% Int is great too, so if you can get a mix that's a double bonus).