Choose anchors, not a checklist
Start with Gateway of India and build outward only if the day still has room.
- Anchor the day around Gateway of India or Marine Drive.
- Keep Bandra for the right weather and timing.
The strongest attractions plan in Mumbai is selective. I would make Gateway of India the first anchor, add Marine Drive or Elephanta Caves if they sit naturally nearby, and save Bandra for the right timing instead of forcing it.
The practical rule is simple: Gateway and Colaba first, Fort and Marine Drive nearby, Elephanta or Bandra separately. That keeps the day grounded instead of making it feel like a loose checklist.