You must visit Guwahati then you will get there varieties of food at very low cost and you can go to restaurants like table talk, foodvilla, and even street food are the best place for you if you are a rich foodie.
Watch Tripoto's World of MG : Homecoming series on YouTube. Ayush and Aisha have travelled Arunachal and I'm verybsure thats a great guidance and idea for your trip. have fun!!