From my scouring of the config I cannot find a way to do so. I've got rid of the on screen text, the only thing that is stopping me from using this now is the fireworks that constantly go off.

Could you please provide the following versions:
Minecraft:
ModLoader:
PMMO:

did you figure out how to turn them off?

Depending on the version you're playing depends how you turn them off if you join the discord and ask in the appropriate channel we can help