Sri Lanka Trip Itinerary Planning

I am seeking a local expert to assist with a detailed itinerary for a family trip to Sri Lanka lasting 14 days. This trip should cater to my interests in cultural and historical sites, nature and wildlife, and beaches and relaxation.

Key Requirements:
- Comprehensive day-by-day itinerary
- Recommendations for cultural, historical, nature, and beach activities
- Suggestions for self-contained villas, apartments, and houses for accommodation