Awesome! I live north of Austin-Bergstrom and I quite often see planes on final approach. I've thought about doing this, and also trying to find a physical site for a telescope or telescopes to watch take-offs and landings.
Let me know if you ever go down this rabbit-hole. Happy to give you pointers! You can get some pretty decent cameras off ebay for <$500. Since you are close you do not need much zoom.
I live under KTEB’s most common departure procedure and very much want to integrate this with my current ADS-B exchange setup. Super excited to give this a shot, hopefully won’t freak out the neighbors too much.