Still just starting the game but I have useful feedback relating to the early stages:
The writing is great! You could definitely use some set piece CGs to go with the longer segmets of the game that stretch out in a single place This would be especially helpful in the portion of the game that is simply T H E H A L L A W A Y. CGs for individual scenes with the girls would also be nice, but I imagine that'll probably be something you're planning on filling out as the budget increases. Frankly, I like the entire vibe so far. Good music, good writing, interesting art direction. I know these projects are expensive and you appear to be in it for what seems to be enjoyment of the story you're telling here. I have similar aspirations so I can relate.
TL;DR: Love the writing and music choices. What art is there is great but I think more of it would be helpful for both immersion and attention spans. Commissioning this stuff obviously takes time and money though. Keep it up, will be monitoring this project closely as I'm enthusiastic for its future.