Possible to create my own EXT. board instead of 4G?

Edit: Nvm, found that some folks are already working on it. I’ll join their party.

I’m working on a Pi project involving rocketry. I have a flight computer with a RFM95w LoRa module and GPS onboard.
I would like to transmit telemetry back to a ground station, which I’m going to use the uConsole for.
I would like to make my own EXT. board with a matching RFM95w and GPS unit for tele purposes and GPS for triangulation to the landed rocket.

It would be fairly simple. 5v to GPS board, Rx/Tx lines. RFM95w uses SPI and 3.3v. That can’t be too complicated.

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