Hi Amir,
Greetings for the day! First of all great choice planning a trip to these locations in winters. You can cover these places in under 10k if you go for a backpacking trip and use hostels as a medium of accommodation. It is also advisable to do inter-place transfers at night if you want to cut on the accommodation expenses. However, that being said if you are looking for hotels and other mediums the budget can extend between 15k-20k depending on your choice of the room. Happy travelling!! Regards,
Udit Khurana