Witcombe was matter-of-fact with the plan against Otago tomorrow night - play their game.
"We are very keen to go down there and play some rugby," he said. "Obviously it's going to be dry [the match being played at Forsyth Barr Stadium] and it's a good opportunity to get into our game.
"They're a good side but we really just need to work on us, it's ours to lose really."
While Witcombe was still glowing with Friday night's 23-21 win, he was not happy that the team diverted from the game plan at times.
He said against Otago there would be a real focus on playing their brand of rugby with particular interest on ball security and the game plan.
Northland will have to step up to win, before having to back it up on Saturday when they play Southland in Invercargill.
Helping the Taniwha, though, is the Otago team's lack of superstars and growing injury list. However, their side does feature five 2014 Highlanders' squad members.
The week ahead
Northland v Otago, tomorrow, 7.35pm (Dunedin).
Northland v Southland, Saturday, 4.35pm (Invercargill).
Taniwha
Ross Wright
Matt Moulds
Namatahi Waa
Shane Neville
Tom Murday
Dan Pryor
Jack Ram
Cam Eyre (c)
Tane Takulua
Dan Hawkins
Jone Macilai
Troy Gilbert
Brook Gilmore
Whiria Meltzer
Matt Wright.
Reserves: Howard Sililoto, Willgriff John, Michael Stolberg, Kara Pryor, Kurt Davies, Ume Fosita, Warren Dunn.
Otago: Aki Seiuli, Liam Coltman, Michael Mata'afa, Jackson Hemopo, Tom Franklin, Lee Allan, Hugh Blake, Charlie O'Connell, Josh Renton, Hayden Parker, Fa'asiu Fuatai, Teihorangi Walden, Jayden Spence, Matt Faddes, Trent Renata. Reserves: Sam Anderson-Heather, George Bower, Josh Dickson, Naulia Dawai, Nick Ealey, Peter Breen, Tony Ensor.