Regional vs Japan Railcard

Hello, we are wondering whether to buy a Japan railcard for 7 days of a 13 night trip, starting the rail pass from Hakone/ Odawara or a regional 5 day Kansai pass, starting from Kyoto. We are travelling
1. Tokyo (4 nights) - Hakone (2 nights),
2. Hakone - Kyoto (4 nights)
3. Kyoto -Hiroshima (1 night)
4. Hiroshima - Osaka (2 nights)

We plan to visit Mijayima and Nara

What would you advise is the best value please?

Many thanks