It turns out Elecrow has some trouble manufacturing half-holes which I used for the CR2032 battery holder in order to save some space. It doesn't really matter so I made the half-holes whole and since I had to make the transmitter board bigger I also broke out the RF signal pin and LED so that they could be used if the module was used in a different way.

As you can see the board still fits the 5x10cm limits.