It was a big task to defeat the minor premiers Takahiwai last Saturday to reach the final - especially after losing playmaker Linn Hunapo in the first round of finals football against Portland - but one they tenaciously stuck to until the final whistle.
The Knights have already surpassed expectations for their season but are keen to go one better this week.
"The boys are really looking forward to getting a taste of grand final football and know they could go all the way but no matter the outcome, it's been a really good year for us," Hunapo said.
The Knights showed impressive strength and commitment against Takahiwai holding their line despite having two players sin-binned and then breaking out to score twice against the odds.
Otangarei and Hikurangi have met twice this season with the Knights clearly winning the first encounter but the second was a hard-fought 8-6 win for the Stags.
Rau, the veteran playmaker for Hikurangi, is happy to be on deck for the final having survived the semifinal win over the Hokianga Pioneers playing with a shoulder injury.
"Last week I restricted myself on the field but it's the last game of the year this week so I can go all out in the final, there's no need to be conservative," he said.
"There are a couple of other players nursing niggling injuries and a couple more who will have to wait until the judiciary sits to decide whether they will play." Hikurangi's semifinal against Hokianga saw a first-half brawl erupt in which two players from each side were sent off but the Stags have prepared for all eventualities, Rau said.
"We'll deal with whatever happens accordingly," he said.