Explore Dharamkot and Gallu villages along with all popular destinations in Dharamsala and Mcleodganj area. If you like treking you can go towards Triund, Kareri lake and Indrahar pass (Ask local about the current status of the road). After that if you have enough time you can go either in Kashyap valley (Palampur, Birbillong etc). Otherwise, go to the Dalhousie town through Jot pass.
It totally depends on 2 factors: First your preference for the topography: Mountains: If you like Mountains then Winters is an epic time to cover the beauty of Sangla Valley, Spiti Valley and Ladakh. These three are once in a life time trip and in winters with snowfall it is just epic to be there. Beaches- 10 days in Goa, Kerala, Andamans and Lakshwadweep are just perfect for some fun time. The 4 destinations are meant for a perfect 10 days trip. Rajasthan- The trio of Udaipur, Jodhpur and Jaisalmer is normally considered at its best in winters during december. Rann of Kutch: The white salts will take your breath away. The trip can be combined with other places like Somnath and Dwarka :)
Yes its incredibly legit to book through Tripoto and they are also providing some great options ( the credits can give you ample discounts) for a smooth trip.
Naseeb you can give a whole lot of information by writing a trip or photoblog and then giving all the options so that it is visually appealing for everyone in the community :)