Hi, Day 1: Fly till Guwahati and take the early morning flight, reach around 10 or 11 am. Stay over and roam the city. Day 2: Come to paltan bazar bus stop early morning and take a bus till shillong, reach by afternoon, and explore the town. Stay over. Day 3: Take a private taxi and head towards Dawki river , a must visit place in meghalaya which is 95 kms from shillong. And then Live root bridge. Come back to shillong that evening.
Day 4: Take a bus back to guwahati. For Arunachal pradesh, book a bus or train as its an overnight journey.
Day 5: Reach Itanagar early morning and book all stays prior. Explore the town and local markets.
Day 6: Take a private taxi and head towards Ziro valley and Bobdila. Stay at Bomdilla.
Day 7: Come back to Itanagar by evening. Day 8: Overnight journey from Itanagar to Guwahati.
Day 9: Fly back from Guwahati to Bangalore. Happy Travelling!!