Some very good results there - well done !

light panel repaint ? - Only attempt this if you have access to a manual staple gun or pneumatic staple gun. It is easy to remove everything and repaint, the hard part is re assembly. But you have repainted the inside of the head, so I would consider the white board if you are confident in reassembly.

Black sections of the head - The white knight paint you are using is almost a perfect finish to the original. I'd attempt it for sure.

Keep up the good work !