Wayanad is a must visit. You can cover some places in Karnataka and some in Kerela that are nearby. This way you'll get best of both worlds. Maybe Coorg, Bandipur in Karnataka and then come towards Wayanad in Kerela and Kunnur.
Start with Hampi, Then Move to Karwar, Then Murudeshwar n Om Beach, Then Udupi Then move to Coorg visit Madikeri , Abbey Fall, Mangalore Now u can return to Bangalore via Mysore n in between Bandipur National Park