I prefer each girl solo. If it weren't for the tragic story that occurs when breaking up Athena and Heidi, I would be perfectly happy with each of their solo stories. Valeria would probably bitch slap the MC and cut any bitch who tried to take him away.
The beauty of this story is that I find a romantic, forever and ever love, and happy ending with every single one of the girls on their own. Each date in the last chapter was just perfect.
One disclaimer, the only path I did not play out yet was Zenda because it was the one path where you could not have any of the other dates. Even Valeria is fine with the others until you commit to her, of course. Zenda is a bit on the dominant side for my personal tastes. I will do that storyline because I have no doubt it is as well-written as all the others.
So, in this story, I would rather have each woman one-on-one with complete dedication instead of impregnating them all.
