The movement pattern that works
One coastal base, one bigger outing, one easy food landing.
- Use Xiashan or Jinsha Bay as the easy coastal base.
- Keep Chikan for a slower old-town layer when the day stays city-side.
- Plan Huguangyan, Techeng Island, or Donghai Island as separate outings.
Zhanjiang looks simpler when all the coastal names sit in one list, but the useful route has to respect distance and weather.
I would keep the first day city-side: seafront, food, maybe Chikan. Then choose one bigger outing for the next clear window rather than stitching everything together.