I can confirm for the C6, it's a bit tight for the switch but that should do it!
How are you going to connect the cables to them? I don't recommend terminals, such as the following, because they will add to the internal depth.
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Soldering will be better about that as you can solder the cables at a right angle, parallel to the back of the case. But that will leave dangerous contacts accessible to the touch, unlike the above terminals and their protective cap.
As right angles connector/cable are hard to protect properly with an heatshrink sleeve, liquid electrical tape could come in handy at that point.
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That will let you have a flushed top and an hinge only visible on the front? Sounds good!
Can't wait to see how you implement that! If it's still on your list that is...
