Thanks for your quick replies. I will order a Pico today.
Also, why would someone choose the Espruino WiFi when they are connecting via LoRa? "If you're using this breakout board then you can place it in breadboard alongside an Espruino Pico or WiFi, making sure it connects as follows..."
Finally, Things Connected have a step by step guide for the RN2483 which you might find interesting https://www.thingsconnected.net/support/#step-1_4