Zaruthustran
The tingling means it’s working!
Looking at the RAW, I agree that all bonuses would apply. 3E's confusing obsession with "off-hand" is gone (speaking of which, I fondly remember my polearm-wielding character who got an off-hand attack with his armor spikes... ah, munchkiny 3e).
Anyway: if you get Polearm Master then consider also picking up Sentinel, so the opportunity attack drops the target's speed to 0. And/or Martial Adept, for Menacing Attack (if they're frightened, they can't come closer) and Pushing Attack (to shove up to 15 feet).
Anyway: if you get Polearm Master then consider also picking up Sentinel, so the opportunity attack drops the target's speed to 0. And/or Martial Adept, for Menacing Attack (if they're frightened, they can't come closer) and Pushing Attack (to shove up to 15 feet).