The first day I would build
Give the city one clear route before adding extras.
- Start with Te Papa and Wellington Cable Car while energy is high.
- Use Cuba Street as the natural reset instead of crossing town too early.
the easier plan is Te Papa and waterfront first, Cable Car or Mount Victoria when clear, Cuba Street later. That keeps the day readable instead of turning every good name into a separate detour.
I would rather leave one place for tomorrow than drag a tired route through Mount Victoria just because it looked close on a map.