Here is a thought for a weekend trip that you can do over a period of 3 days. This trip is in the Kaimanawa Forest Park beginning at Clements Mill Road End and finishing at Clements Mill Road End.
Drive down on day one and camp at the road end.
Next day tramp into cascade hut for lunch then head towards Boyd lodge camping about 2 hours from Boyd on the edge of the bush near the private airstrip.
The following day tramp over to Boyd Lodge for lunch and then carry on over to Omaru Hut for the final night. Omaru Hut is the brother hut of Waipakahi Hut.
The following day is the final leg out to Clements Mill Road again and then back to the car.