Thank for your inputs. It's very much appreciated. I still have not soldered the PXFMini yet on to the Pi Zero W since I do not have a definitive answer yet. Also, I do not have the OS for the PXFMini. I have requested a few times (with my order number), but no one has sent me an email on where to download the latest OS.
You're right; I watched the video too that talks about the Wifi/Bluetooth module, which is the same as the one on Pi 3. If that is the case, then technically we shouldn't have any issue with the OS. I guess we'll have to wait and test.
As for the Taranis, I honestly do not know how to answer that since this is my first time to venture into Robotics, RCs, and Linux. It is a requirement for my course "Internet of Things." I need to submit a project by the end of the semester, anything that has something to do with IoT. I figured drones and robotics are fun to learn and has very significant impact on the development of IoT.
Again, thank you for your help!
Have a good one.