Progress:
Sunday, September 24th, 2017:
Soldered my Pi to the PCB. What took me maybe a LONG time last build (if you're wondering how long, let's just say too long) took me approx. 20 minutes to do this time.

The battery monitor is slanted but doesn't matter because I tested and everything works. Oh, and please ignore the burnt L pad...it's something I don't want to explain

Still waiting for the rest of the parts to come.