Itinerary Check for 18-20 Day Japan Trip, Second time visitors in Feb-March

We are late 20s couple going to japan our second time, We are still working out what we are going to do in each city, but just confirming that these dates are doable.

NOTE: I put 20 days as It is flexible and if we could add 1 or 2 days to this trip, where should we add it? It seems that fukuoka is too rushed but makes sense to fly out of there instead of taking the train back to tokyo.

Thanks in advance! Thanks! We're open to change.

Day 1 Tokyo

• Arrive in Tokyo, Check into Hotel. Explore eat and other activities.

day 2 Tokyo

• Ueno Park Shibuya, Tokyo National Museum

Day 3 Tokyo -> Day trip to Kawagoe

• explore main shopping street, Shrine, Yokocho

day 4 Tokyo -> Day Trip Kamakura

• Shrine, Komachi Dori Street, Enoshima Train

day 5 Tokyo

• shinjuku gyeon Tokyo tower, Harajuku

day 6 Tokyo- Day trip to Yokohama–

• Cup Noodles Museum, Minatomirai, Chinatown

day 7 Tokyo

• Skytree Ikebukuro and more

day 8 Tokyo -> Kanazawa-

• Travel, Explore Kanazawa Higashi Chaya District Nagamachi Samurai District

day 9 Kanazawa –>Day Trip Shirakawago

• Village explore,

day 10 Kanazawa –> Osaka

• Travel + Explore some Osaka

day 11 Osaka

• Hangout in Osaka Dontoburi and various places

day 12 Osaka -> Day Trip to Kobe/Himeji –

• Castle, Kobe Chinatown ,Kobe Zoo

day 13 Osaka-> Okayama -> Ending in Hiroshima

• Okayma Castle Kursashiski,Bikan,Checkin, Explore some of Hiroshima

day 14 Hiroshima–

• exploration, Hirsohima Castle, Peace Museum

day 15 Day Trip to Miyajima island

• Shrine + Torii Gate + Mt. Misen, ropeway

day 16 Hiroshima –> Fukuoka

• Oyster huts, Ohori park, Tenjin

day 17 Fukuoka

• Dazaifu, Marineworld Canal City

day 18 fukuoka–> home – 

Flight Taipei-YVR||

Please let me know if this itinerary is too ambitious, Im definitely feeling FOMO from Kyushuu so we could also just skip Kanazawa/Shirakawago and explore Kyushu.

We could also swap Kanazawa for Kawazu to catch the Kawazuzakura

Thanks,