I've asked different people this question and have gotten different answers so I'll just post it here.
Does composite plating count as armor which will negate the wisdom AC modifier for monks?
When unarmored and unencumbered, the monk adds her Wisdom bonus (if any) to her AC. In addition, a monk gains a +1 bonus to AC at 5th level. This bonus increases by 1 for every five monk levels thereafter (+2 at 10th, +3 at 15th, and +4 at 20th level).
These bonuses to AC apply even against touch attacks or when the monk is flat-footed. She loses these bonuses when she is immobilized or helpless, when she wears any armor, when she carries a shield, or when she carries a medium or heavy load.