Whether to get the Green Car pass with or without Nozomi upgrade...

Hi there,

We are a couple planning to travel after Golden Week in 2025. Here is our planned itinerary:
May 7-10: flying from HND to New Chitose Airport and staying in Sapporo
May 10-13: train from Sapporo to Hakodate and staying in Hakodate
May 13-17: train from Hakodate to Kanazawa and staying in Kanazawa
May 17-19: train from Kanazawa to Hiroshima with trip to Miyajima
May 19-23: train from Hiroshima to Tokyo, with stop at Kyoto station for a few hours perhaps, staying in Tokyo with day trips to Kawagoe and Kamakura

Planning on getting the 14-day Green Car pass. We would start using the pass on May 10th. Is the Green Car pass worthwhile to provide more comfort and luggage space for the longer trips? Also, wondering whether worthwhile to reserve seats on the Nozomi for Hiroshima-Kyoto-Tokyo since there are way more Nozomi trains than Hikari...can't find an easy to read timetable for Hikari for these stops.

Thanks for any advise.