Pssssst I think you can move the menu by going into screens.rpy, and looking for "# Choice". Below that is the code that styles user choice menus. If you change the xalign and yalign values under style "menu_window", you can move it. Here's what mine looked like at xalign 0.01 and yalign 0.99 (using zero or one broke it). You can probably play around with that until you get something you like.
I'm really looking forward to seeing this finished, and I dig all the concept art and the "looking out a computer screen" idea you're going for!