The first day I would build
Give the city one clear route before adding extras.
- Start with Miraflores Malecon and Barranco while energy is high.
- Use Plaza Mayor as the natural reset instead of crossing town too early.
the easier plan is Miraflores and Barranco together, historic center as its own block, Larco Museum or Huaca Pucllana when timing fits. 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 Huaca Pucllana just because it looked close on a map.