Beehive monitoring with STM32L Bluetooth node mesh and LTE/WIFI/Lora gateway

Hello,
want to start a bee monitoring project with low power consuption, stand alone audio processing/analysing and also affordable for smaller bee apiaries.
For now due to promising power consuption savings I prefere STM32L family with 32-bit ultra-low-power MCU with Cortex®M4F, but before I start to put work on STM32L4 Discovery Kit IoT Node with Avnet M14A2A Cellular Shield as a gateway and SensorTile development kit as a bluetooth mesh option, would like to know your opinion about best practice, based on your experience, what kind of things to be avoided and what things to consider, during the development of this type of open source project.
Plan is to build bluetooth v4.1 node mesh in every hive. those bluetooth nodes would be with SD card that contains lookup table files with moust usefull bee buzing audio. Mem digital microphone would periodacly take sample of sound and with help of FFT compare those samples with lookup table on SD card. When some action is trigered, node sends notification to client thrue gateway interface on LTE, WIFI or MQTT server. will be happy to hear your suggestions.

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