SheetCam is a good app.
My setup has a pneumatic actuated probing switch, custom probing macro, screenset, external THC and various other bits and bobs.
I’ve never heard of a setup like that. Sounds complex! How does it work?
The probe switch is mounted on a small air cylinder, your one will use the nose of the torch to sense the material, my one uses a very delicate switch, in the macro the head is moved sideways a little to place the switch where the pierce will be, the switch lowers, the head then drops until the switch triggers, the Z position is set, the switch lifts up, the head lifts up, the head moves back to pierce position and away we go.
It sounds complex but its not and its pretty fast, the big benefit is that i can sense very thin material without the weight of the head/torch deflecting it downwards, IIRC I was the originator of the air cylinder probe and I'm glad to say others have used it as well now
Here's a video, it was early days then but functioning.
https://youtu.be/Z-N3LOs73tE