I am planning for a no time-bound solo budget trip to Himachal. My desired itinerary is as follows: Delhi-Shimla-Spiti circuit (the route, as mentioned in your articles)-Manali-bhrigu lake trek and hampta pass trek- Kullu-Kasol-Tosh and Kheerganga trek-kullu-mandi (parashar lake)-Shimla. In order to explore the above mentioned places, can you suggest me the best time to start the trip from Shimla? And which route would be better...starting from manali or shimla for the spiti trip??