Hi guys, i'm traveling to Japan with my family on April and hope to get some insight/suggestion from you guys

1. Can i still witness cherry blossom during mid April? My research seems indicate that the bloom usually occur during end of march to early april
2. Is it recommended to tackle Tokyo+Osaka+Nara+Kyoto in 10 days?
My plan is as follow, not sure if it would be too tiring as i'm leading a group of 8 with 4 seniors (50+)
Day1-4
Flight to Tokyo
Check in Hotel in Tokyo
Travel around Tokyo for 4 days
Day 5-6 to Osaka via shinkansen (JR pass activation)
Check in hotel in Osaka
Spend the day around Osaka
Day 7 to Nara via JR Railway from Osaka (Day Trip)
Travel around Nara
Return to Osaka via shinkansen after dinner
Day 8 to Kyoto via shinkansen from Osaka (Day Trip)
Travel around Kyoto
Return to Osaka via shinkansen after dinner
Day 9 to Kyoto via shinkansen from Osaka (Day Trip)
Travel the rest of Kyoto till around 3PM
Return to Osaka for dinner via shinkansen
Day 10
Checkout at 2PM
Linger around Osaka for a while and then shinkansen back to tokyo for flight
can stop for shopping at some tokyo station before heading to haneda airport
Is this feasible?
Appreciate if anyone could share their itenary with me for reference as well

like detailed one if have hehe, pm me
Not need Japan Rail Pass. Save your money
Just use the 10-day to cover Tokyo area extensively and 1-2 sidetrips like Hakone/Mount Fuji, Kamakura or Nikko
Mid April - you can still see pockets of cherry blossom tree but obviously not as nice as full bloom