raspberry Pi0w as a Pixhawk companion computer

Finally after review Raspberry PI0w specification I decided to use it as an companion computer for my Pixhawk. This board is not so powerful as PI3 but it`s really small and I think strong enough to run casting software. I hope gstreamer and proxy software for telemetry can work on this board in same time.
Both boards will be connected via cable  between RPI UATR port on GPIO and Telemetry port on Pixhawk. Those changes allow me to reduce significantly weight of drone and there will be not need to using TTL 2 ethernet converter any more.
Additionally Pi0W supports regular raspberry PI cams and I can use my old PI camera without any additional costs.