How old are the family members that are going? How about asking them what they want to do? If you've got older kids who (1) could stay awake for
MNSSHP and (2) don't have to hop, then MNSSHP might be the better choice. If you've got young kids who really need an afternoon break, then you might be better off with park hopping.
In our family, we had a similar decision to make regarding going to
MVMCP. We opted to not go to MVMCP because it doesn't start until 6 p.m. and (1) our young kids can't handle being up past 9 p.m. and (2) no one else wanted to be up late either. Instead, we opted to get the Candlelight Processional Dining Package with a 5 p.m. show and dinner at 6:50 p.m. We'll be back to the resort in time for a good night's sleep.
So, I would poll the family and see what everyone who is going thinks.