Need Build Advice: RF/Herald of Purity Inquisitor

As stated, I would like to make a Righteous Fire Inquisitor for the next league, and include Herald of Purity in it. However, not sure how to approach this. There are several low life RF/SR builds that I could probably swap out one of the auras for HoPurity, but not sure how that would interact, or even if it would gimp the character as a whole.

Any decent build advice or suggestions would be welcome.