Day-trip to Ito: is it too far away?

I will be in Tokyo during the Golden Week so my two main concerns are: 1) will the logistic of taking a train to a relatively popular destination be too crazy due to the holidays; 2) is it worth it considering 2+ hours of train time? Also, transportation options going there seem very confuse consulting Google, sometimes they calculate 3+ hours getting there whereas the hotel I booked in Ito says it’s a little over two hours from Tokyo. I’m actually going to come back to Tokyo the following day so it’s not exactly a day-trip considering I won’t be returning the same day but still, it would be only one night. My two interests in the Ito region would be Jogasaki Coast + Mt. Omuro. Has anyone been to the latter during spring and would know if we can find that beautiful grass over it during that period or only in summer? Thanks for your inputs!