We have decided to use the HopeRF RFM9x 433/915 MHz LoRa modules for longer distance links and WiFi for shorter links. We are currently developing a software wrapper for the radio modules which presents the same MQTT-like interface regardless of which mode is being used. This will enable us to easily add support for different wireless modules in the future with minimal code changes. We will use MQTT to move the data from where the hive is deployed to a server.