For what its worth, I got about 10 legendaries yesterday doing this run about 6 times. Probably the RNG god favoring me, but the speed in which you dispatch mobs contribute to that as well.
For skills, I'm using multishot since it clears mobs faster for me. Vengeance rune also helps refill both hatred and stamina.
For skills, I'm using multishot since it clears mobs faster for me. Vengeance rune also helps refill both hatred and stamina.
Apart from that, I agree with you. If I manage to craft a hellfire ring like you got, I'd be farming it up at low monster power level too.