Hey Saurabh,
No need to book a package. It will be more exciting to go on your own. Reach Goa and hire a bike or scooty and wander all the Goa from North to South.
Yes, winters are the best time to visit Goa. I visited there in December 2015.
Duration : 3-4 Days
Activities : Parasailing, Scuba , Cruise or Beach party
Cost : 18-22k per person including the activities
Hope this would help you.
Happy traveling!!
Yes, timing is perfect. THINGS TO DO IN GOA :
1)North Goa Beaches : Anjuna, Baga, Calanguate,
2)South Goa Beaches : Colva, Butterfly, Palolem, Agonda, Netravali Lake
3)Fort Arguada ( Movie 'Dil Chahta Hai' was shooted here )
4)Dudhsagar waterfalls ( 2.5 hours, 60 km from Goa)
5)Activities: Scuba, Prasailing, Mandovi River cruise ( Casino and party), A boat ride for Dolphin watching
6)We enjoyed all nights in Goa by drinking and sitting on beach and returning to hotel room in morning 4-5AM. Then next day started wandering again from 1PM and at last in evening back to beach.
Hope this would help you.