The first day I would build
Give the city one clear route before adding extras.
- Start with central market and Lulua River while energy is high.
- Use Kasai-Central context as the natural reset instead of crossing town too early.
the easier plan is central market and city orientation first, river or transport errands only when timing is realistic. 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 airport route just because it looked close on a map.