Thank you, I will look into the Kansai pass.
I'll been staying in Nagoya for two nights, Kyoto one night and then Osaka for the final night so if the ticket has to start in Nagoya instead of NGO then it can be considered a three day ticket instead of six.
The only reason I'm adding the stop in Osaka is because I've got an international flight from KIX at 10:50 in the morning and travelling from Kyoto to KIX might otherwise mean too early a start. Happy to spend two nights in Kyoto instead of one if I can get around that though.
*Last time I got the train from Osaka to KIX it took about 40 - 60 minutes so I have that in my mind as well.