Nikko Kamakura question

Hi everyone! This January, my SO and I are traveling to Japan for two weeks, but I’ll be arriving three days earlier than her.

My original plan was:

• Day 2: Shinjuku – Nikko – Shinjuku

• Day 3: Shinjuku – Kamakura – Shinjuku

She arrives on Day 4 around 5 PM.

My main question: would it be doable or realistic to stay overnight in Nikko, then head straight to Kamakura the next day and leave Nikko at around 9 AM-ish? I’d need to be back in Shinjuku by around dinner time. And also, whether I buy the Nikko all areas pass or not totally depends on this.

If that sounds too rushed, I’ll just stick to separate day trips for Nikko and Kamakura. Would love to hear your thoughts or experiences. Thanks!

EDIT: the reason I’m considering the all areas pass is mainly because I’d like to see the nature side of Nikko (the lake, falls, etc.) I have never experienced snow in my life and this would be the first time I see something like this.

by rrodrigobjj