Tokyo-Nikko-Kitakami-Tokyo

In a last ditch effort to see Sakura this year I'm thinking of using our last 2 days of the JR pass to visit Kitakami on the 24th of April.

The itinerary would look like this:
4/23 - Tokyo to Nikko (spend the night)
4/24 -Nikko to Kitakami all day and return to Tokyo in the evening.

This is a last minute idea and I'm thinking it may be a bit rush or near impossible to enjoy with so much travel. Is it even possible with the JR pass or will it be too expensive with non-JR trains?

I would love to hear your thoughts.

Thank you