JR Rail PAss Yes or no for our itinerary

Evning - and thank you for your help. We tried using the Navitime and JR Rail PAss apps to see if the JR Rail pass make sense for us. We are looking to use the Green cars fro most of the trips

10/26 - Arrive Haneda 3:25pm, train to Kanazawa
10/30 Kanazawa to Fukui
11/2 Fukui to Kyoto
11/7 Kyoto to Okyama
11/8 Okayama to Mishima Station
11/10 Kawaguschiko to Tokyo
11/13 Tokyo to HND (will cab or shuttle or pay for train)

This is a 15-18 day itinerary, does not seem to make sense to get 21 day pass, and wondering if it makes sense to do JR pass at all. given the destinations.

Thaoughts? and Thank you!