I'd be much more concerned about what Grant Roberson thinks of it. He is chair of GOV, Finance Minister and the power (not very far) behind the throne while Winston is acting PM. In fact, he acts as Deputy PM in all but name even when Jacinda is on deck.
Under normal circumstances Ministers rarely announce when things are going to Cab Committee, preferring to hold their tongue until the paper is ready for full Cabinet (and a quick stamp of approval). That way if the Cab Committee turns them down or makes them rework the paper, the public is none the wiser.
If the Committee rejects the paper, Ron is going to look like a prize pillock who can't even convince his own colleagues of a course of action, let along win over the country. Normally a Minister wouldn't make public statements about an upcoming paper unless he was very very sure of support. On the other hand, we are talking about NZ First here, so idiocy is not out of the question. Given that National can be relied on to support the purchase, my guess is that it will go through over the 'principled objections' of the Greens.
Agree that four airframes isn't enough, but considerably better than none!