A Godox transmitter for your Sony would operate your Godox flash too. I do use the extension cables, but mostly for remoting the flash transmitter when the camera is on a high tripod. You would have the option to add other Godox or Flashpoint flashes later too. Flashpoint is a Rebrand of Godox, so the same. The hot shoe extension cables work for getting the flash off the camera, but to me, the Godox transmitter would be the better choice, as you could move the flash most anywhere within 300' of the camera this way. Flexibility in setup is the benefit. I have several Canon cameras and one Fuji. Each has it's own Godox X Pro transmitter, and they all talk the same X Band signals to my Godox flashes. All work the same and are very reliable. I can use any camera with my field kit or with my studio lights and it all works together perfectly, except for operator errors. I do seem to bump the channel selection sometimes. Lights don't work when set on adjacent channels.
Charley