Looks great! Glad you got it working!
Good point on the pin spacing. I found that it was quite annoying trying to solder 10 3x1 pins as well.
You only need the switch if you plan to use my RC transmitter code, in which the switch changes output power. If you do use a switch like the one I used, make sure the metal parts of don't short out the pins under/around it like I did!