Nagano during christmas itinerary

I'll be going for 8ish days from 26 Dec to 2nd Jan, Would love any feedback.

Day 1 (26 dec): Have not booked, checking flight ticket for osaka/narita airport but first day should be making my way to hotel in nagano and exploring around the hotel

Day 2 (27 dec): Matsushiro/Tenkyu Ji, Matsumoto castle/nawate street at night

Day 3 (28 dec): obuse, monkey park(yamanouchi), Yudanaka Onsen,shiga kogen

Day 4 (29 dec): karuizawa, Nunobiki Kannon(komori)

Day 5 (30 dec): Togura Kamiyamada, ueda, unno

Day 6 (31 dec): Togakushi-jinja, zenkoji temple, Nagano's Alps Azumino National Government Park, 

Day 7 (1st jan): chill in tokyo then return the next day

First time experiencing winter(ever) and hatsumode so any feedbacks including places that can be included in you opinion would help, thanks!