tateyama kurobe alpine route

I am confused to cover this as a day trip from Tokyo or make my base on previous day at Matsumoto.

I am considering a day trip possibility from Tokyo, to save a day. But if I do this trip from Tokyo using JR Pass, can you advice me what time I have to start from Tokyo and what time I will be able to reach back.

My alternate plan is to stay at matsumoto on previous day and start at 8 AM next day for this trip.

Please let me know what time I have to start earliest from tokyo and if this day trip is recommended at all.