You can check Leh. Most beautiful place. And don't forget to add Tso Moriri lake to your itinerary. It is less crowded as many tourists don't know about it. And a lot of beautiful monastries are there. Few of them are
1. Thikse Monastery
2. Stok Monastery
3. Diskit Monastery
4. Shey Monastery
Go to Meghalaya. there are lots of places to explore. u will need a whole week to complete the Meghalaya. places to visit are cherrapunji, dawki, west Jaintia hills
shillong, barapani, Nongriat, Mawlynnon, laitlum ., mawysyram, Mawsmai cave, etc.