WOW!!! That is some amazing background research there. This somehow makes more sense of everything that's happened in the story's current build and also gave the possibility that almost everyone of them(except for Sal and Tyson) could've been the killer all along before Jack even popped out of the woods.
P.S. Hoss should also be in that list of potential suspects since Hoss could've used his ability to lie to his own advantage. For example, both him and Benson could've probably lied to you about their "deal" and Benson could've been helping Hoss kill them all(meaning Benson could be a suspect too).