Nice setup. A more robust Pi (4 or 5) would give you the resources to add on other applications on teh same device.The newer devices will give the options of more memory and the ability to use SSD instead of an SD card. You can even look at the EASY Button for multiple ADSB feeders from the same host.
@abcd567 and others have done quite a bit AIS (ship tracking). I see an Ambient Weather WS2902 (or similar) - consider weewx with an interceptor driver (if you have not yet tapped into the weather station) for another net time sink 
Good hunting!