Resupplying around Kahurangi

Hi I’m planning a trip in Kahurangi Forest, my experience is mostly hunting trips around Opotiki where I live so I’m basically a complete beginner in real tramping. I’m starting with the Heaphy Track then resupplying in Karamea then walking Wangapeka, at the end in Rolling Junction the closet store is four square in Tapawera but I’m struggling to workout transport there, I’ve only seen the Tapawera settle curtesy shuttle but that’s through an accomodation package, does anyone know of another way to get there and back on the day? Once back at rolling junction I plan to go back along the wangapeka till it meets up with the Leslie-Karamea walking north where I will then need transport from flora car park to Motueka This is a very early plan so it will probably change when I find either a better way to do things or come to the realisation I’m in over my head. Any help would be appropriated, thanks