The dAISy-Mini has two serial ports, TX1/RX1 & TX2/RX2. These ports are configured for 38,400 bps. The Neo-M8N is also configured for 38,400 bps. The output of the Neo-M8N is connected to TX2/RX2, with the Neo-M8N RX connecting to TX2, and the Neo-M8N TX connecting to RX2. The power pins on the Neo-M8N connect to VCC and GND as labled.
The uBlox Max-M10 is pin-for-pin compatible with previous versions and supports up to 4 concurrent constellations. It's also low-power and runs about $14. You might want to make it an option for your tracker, since it would allow simultaneous GPS, GLONASS, Galileo, and BeiDou reception.