Second scare is about how to get the software onto Raspberry pi W. In the past, all how-tos I have read just say "flash it" and go on to the next cool step, but I'm lost right there.... how to get the software into the thing? - SSH?
My point is, I'd appreciate a really beginner friendly write up of your project. From the parts list, how to connect everything, and how to get the software on to it. I'd pay for such a tutorial rather than the finished product. I know it is your time that I am asking for, but I wish you found time to spare to help a beginner like me.