well you can say bye to Ashe for sure, Madison most likely and probably Pepper. Maybe Nicki as well. Not 100% sure about Nicki she feels like she would and wouldn't be up for a harem. No idea about Gabby or Mason as I don't play their paths.Which decision? Any girl not ok with the harem is free to go....
But as far I understand it light path won't be a harem at most just poly / throuple with certain girls. I think Dark will either be semi or full harem.