It's Sir. The save system is tied to the gamedatabase file in Welcome To Sindusky_Data/StreamingAssets folder. Whether using your old gamedatabase file will work or not depends on just how much I changed things in the most recent update. You can always try it and if it works, great, if not, then better luck next time. I'm likely to implement a way of cheating at some point in the future, assuming there is interest in that kind of thing.
Haha. Yeah, time does indeed roll the dice in whether you get a new text message or not. You can just sit and wait if you really wanted to get every text in the game. Although I've only implemented texts for the sister and mom currently. Do you enjoy the texts? I haven't seen very many games that implemented texting and I thought it'd be cool. Oh, and it was purposeful. I wanted texts to come in organically at various times, places, etc.
Edit: Good to see you back, Reaver! Welcome!