What I plan to do is, once everything's ready, I'll make a public announcement asking who would like to provide some voice acting for the game (Greta wouldn't be available since you would do her voice). There's also some people in real life who I'll ask if they would be interested in providing voice acting for a horror game.
Greta seems to be the most popular character, even more popular than Alesa and Mr. Bob!
Sure, no problem! If you use discord, I usually post in the Rpg Maker Game Jam discord (the jam where A House for Alesa first appeared). I usually post updates, screenshots and information about my projects there. Here's the link:
https://discord.gg/Fdeh3hBtYu
And this is my discord user ID: axeltheautomaton
This is the e-mail where I receive files related to my games, such as translations, and where I'll ask for the voice acting files: axelautomaton450@gmail.com