Small rigid router - Design advise needed

[EddyCurrent]

As I said earlier;

5. . . . , the space you need is going to be bigger than you think.

If you don't do it on CAD then cut some cardboard shapes full size to represent the electrical items and shuffle them about.
I was going to say, if you look at standard panels that will give you some dimensions to aim for. It troubles me that after all that excellent mechanical work you want to scrimp on an enclosure.