That is going to be a great board once support is fully completed for arduino. Unfortunately, the C6 is bleeding edge and is not supported by arduino yet. It is however functional-ish for ESPHome, so that is where I would go if I were you. There is a route to get a functioning zigbee device: ESPHome —> Home Assistant —> Hubitat via HADB (I’m doing this for a different ESP32 board).
There is work underway to skip the Home Assistant step and bring ESPHome devices into Hubitat directly, but I don’t have any experience with it.
Edit: There is also a thread about zigbee and ESP32 HERE
