Hi, my partner and I are planning on spending 4 weeks in Kyushu (October 25th-November 22nd) and I'm finding it quite tricky to come up with an itinerary.
We've been 3 times previously to Japan (visiting Hokkaido, Honshu and Okinawa) and love it. I speak basic Japanese and we are planning to hire a car for part of the trip.
We love eating/drinking well, beautiful nature, onsets, hiking, urban fun and enjoying Japanese Culture in general and we live in Switzerland.
There's clearly too much to squeeze into 4 weeks so we'll have to save some places till next time.
I'd appreciate any tips and suggestions to help improve/ add detail to the itinerary.
Thanks in advance.

Our initial itinerary is as follows: