yup Kintetsu is a big company.. Am not sure if its Kansai based though. they owned the Kintetsu line and Kintetsu bus, so you will probably be using either their train of buses for your whole trip.
You'll be coming in spring , Kyoto and Nara is lovely at that time especially if Sakura is in "mankai" mode. Nara's Yoshino Park is one of Japan's best place for Hanami . The Testugaku no Michi ( Philosopher's Path) in Ginkakuji is almost a must see.. But well you have a very tight schedule
Ahhh Ninja village in Iga. I hope you can dress up as ninjas there. The ninja costume can be rented for 500 yen from 10am -4pm . You can walk around the city with it. And there is also called the Shuriken experience were you can throw shuriken of course, on a dart board
this one is free actually.
So goodluck and hope you enjoy your upcoming trip