[@CrazyShadowy]
I'll answer your questions in a list form.

[list][*] How long do I estimate it happening before each of the deaths? Hard to say. I'd like to give enough time for characterization and interaction and such, so the characters will get to know each other. This would happen before each of the deaths and whatnot, and I feel like the characters with either grow attached to each other or feel forced to not do so due to knowing people will die, or a bit of both. This'll keep progressing between each death.
[*] If people find out who the murderer is early on, I've got contingency plans to keep the game going, but explaining what is a spoiler.
[*] The game would pretty much having its ending when only the host and the murderer are left, or if the murderer is taken out close to the end. Basically, I have 'routes' the game could go down, so there's multiple endings.[/list]