You're my hero. Looks like you're using mdf.
Have you thought about magnets? Seen some excellent interior sections held together with Neodymium Magnets.
Very strong, easily mounted and reusable an infinite number of times. Available in numerous shapes and sizes. I use 2 of them to hold a LED spot light on my milling machine so illuminate the work area. Quick and simple to move and redirect the light.
At least be aware and make a shield or the like.Good point. Probably not a good idea near any electronics.