The secret is in being random about planning trips and not over planning things 😉
Also, being independent about going anywhere, is much more important so that you don't have to depend on anyone.
10 days or week long is enough.
if starting from Delhi or North side then come by Jaipur route to Udaipur and Mount abu.
if coming from other side then you may start with Mount abu, Udaipur, Ajmer, and further way to Jaipur or Jaisalmer whichever you keep as last destination.
There are two trips in Rajasthan.
one is Marwad and the other is Mewad.
Marwad comprises following places.
Jaipur, Bikaner,Ajmer,Pushkar,Jodhpur and Jaiselmer. On the way to this trip one can explore few religious destinations too Those are Salasarji, Khatu Shyam ji Ramdevra Karni Mata Mandir.
Mewad includes these places like as Jaipur Ajmer Pushkar Udaipur and Chittorgarh All can have darshan of famous Nathdwara Temple and Sanwaliya Seth.
Each place required two days.
Best places to visit in Odisha are Katak(Birth place of Sree Subhash Chandra Bose).Bhuvneshwar(capital City).Udaigiri((Ruins Of 11th Century). Dholgiri(Ruins Of Buddhist Era) .Pipli(Hub Of Handicraft).Puri(One Of The Char Dham Of Hindus) .
The road to Gurudongmer would most probably be closed due to haevy snowfall. The other places you can be in North Sikkim is Lachen Lachung Chungthang also Yumthang. But you can also be in Namchi Ravangla , Rinchenpong Barmiwok Chayatal in west sikkim. South Sikkim is mostly about Gangtok Pelling. East is about Zuluk that's old silk route. So go out and enjoy the beauty at its best.
There are many places to visit in Kathmandu ! sucha as
1. Boudhanath Stupa
2.Pashupatinath Temple 3.Swambhunath stupa
4.Thamel
5.Durbar Square Kathmandu
6. Hanuman Dhoka Temple
7.Langtang
8.Nagarkot
9. Lumbini
You can plan for parvati valley and kheerganga trek(Kasol). There won't be crowded this time. And yes Kasol grahan Tosh is doable, and this also comes under lower Himalayan trekks