Connecting to NEO-M8N GPS

[securigy]

So eventually I gave up on PyTrack GPS and bought GNSS 5 CLICK dev board from MicroElektronika.
Board information
It has NEO-M8N GPS receiver that has aGPS (Assist GPS) with cold start (Time To First Fix) of about 25 sec. By all means looks like a great device...
My problem is I have no clue how to physically connect it to FiPy. All I know is the range of available pins on FiPy:
[Analog Input Pins on Expansion Board 3.1 that I use for FiPy are P13, P14, P17, P18 (G4, G5, G30, G31)].
For some reason, however, it does not look relevant in that case. The boards has I2C and UART interfaces...

So, I'd appreciate if any EE guru can tell me what I need to do to connect this dev board to FiPy...

EDIT Dec 22. 2019:
I found the answer here:
https://docs.pycom.io/firmwareapi/pycom/machine/i2c/
which is P9 is for SDA and P10 is for SCL
Is that correct?

EDIT Dec 24, 2019:
However, what is best or more simple - connecting over SCL and SDA pins (I2C) or over SPI/UART ?