Well, yeah. Just be aware though that Cari chose the harem end as the canonical ending to his past game. And given how he has structured this game's narrative and the comments he has made in the past about this game's harem end...
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(sauce:
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...it's safe to assume that it is once again likely going to be the canon path leading up to the next game.
Not to mention the fact that he has alluded that a sad fate awaits the girls whose paths are lost...
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(sauce: Cari's official Discord channel (must be subbed to his Patreon to enter))
So yeah, if you're okay that your playthrough is more than likely going to be invalidated/considered non-canon in the next game (assuming it again takes place in the same universe) and that you're okay with the other girls suffering by the end of it all, then that's fine.