PCB GNSS module with RPi
That should be all you need, make sure the max current from the nrF52833 can be supported by the PI. The GPS antenna will probably require an impedance controlled transmission line (the trace will need to be calculated, check the datasheet to see if it's 50Ω or some other value (75Ω maybe), then calculate the trace width with an online calculator. Four layer boards work better with a signal layer with a ground plane just underneath. It also helps to keep the trace to the U.fl short).
Other than that make sure you have your TX's and Rx's for the uarts right here is a pinout for the UARTS:
https://raspberrypi.stackexchange.com/questions/104464/where-are-the-uarts-on-the-raspberry-pi-4