Hi Everybody, thank you for the suggestions and sharing your experiences.
what I learned is to say bye bye to my BLtouch (i will recycle it on my ender 3 )
I designed new bed support to place piezo (Precision piezo kit Ø20mm):
...and problably i will move to a new print head solution to prevent tilt issues:
i will design a special cooler to proceed with my liquid cooling idea and create a compact effector...
hope you like it and i'm on the right way now.. thanks guys!