I don’t think the Bluetooth will work at that distance.
Can you use a laptop or Raspberry Pi to trigger the shutter? You may need a directional antenna. See the experiments below.
Let me know if the problem is that there isn’t a desktop application for the THETA that you can run on your laptop. If that is the problem, let me know if you have a Windows laptop.
I have a desktop tool that @jcasman and I built for testing. Although it’s possible to compile it for a MacBook, I don’t have access to a Mac and thus only use it on Windows 10 for my personal testing. it’s not designed for public use, but we can post a Windows executable here if you want to give it a try. It should take a picture from a laptop.
There may be other applications out there for the laptop with more normal features for public use. I haven’t looked. We only use the tool above for personal testing.