The 707 works fine in FSX, and FSX-SE, in Windows 10 for me, on my PC.
However, I copied all the files from FSX to FSX-SE, rather than installing it in FSX-SE, because once it's installed, the only options I get when running the installer, is Repair, or Uninstall.
On my laptop, it also runs fine, and it was installed directly into FSX-SE because I don't have FSX installed on it.