Yeah thats the office joke, wood or it didnt happen.
The only problems, i see is make sure your silicon doesnt yellow, if for some reason you leave that thing on a long time, and those things get hot enough, it will burn and yellow.
And your removing alot of the edge stability, not sure how your gonna put that together but your supports are gonna have to be pretty deep on your panels and you can lean those things on an edge or hit anything on any of those edges, or its gonna break.
Set silicon isnt as dense mdf, and sometime tmoulding has an issue staying in mdf slots. You might have an issue with your moulding curling up and not being flush along all your edges.
Seems like a lot of work with alot of variables to totally ruin a piece and have to start over, however, I hope you successfully pull it off. Just make sure your open your eyes to the engineering of the total build while focusing on your effect, they could effect the stability and durability of your cab.