I have some thoughts for you that are coming from a “trying to be helpful” place.
The use of self tapping screws concern me. I’m wondering how many times you can install/remove those screws before the holes become unusable. Have you thought about using a nut on the backside but the nut is inside a counterbored hexagon hole so the edges of the hexagon hole are the wrenching/backing feature? This should allow for multiple installs/removals without messing up the holes. I have used this in the past with 3D printed plastic pieces and it seemed to work well. In your case, I’m just not sure if that would work or not due to the geometry, etc.
The use of self tapping screws concern me. I’m wondering how many times you can install/remove those screws before the holes become unusable. Have you thought about using a nut on the backside but the nut is inside a counterbored hexagon hole so the edges of the hexagon hole are the wrenching/backing feature? This should allow for multiple installs/removals without messing up the holes. I have used this in the past with 3D printed plastic pieces and it seemed to work well. In your case, I’m just not sure if that would work or not due to the geometry, etc.