Hey calicruiser,
Welcome to the Forum! Its kinda hard to really see the overall height of the switch box which would be my only concern. Their is a little room to cut out a bigger space if needed but not much.
As an example of pretty much how it would look, I just redid my center bezel to allow for my single DIN Head Unit, an a custom made EQ/DSP unit for the most part to fit in the same hole. It fits, but barely and we still had to trim it down to the max we could to get it all to fit, and then wound up custom building a chassis that both units would fit into and still have clearance for the face of the Head Unit to slide down, and out to access the CD Changer. By the time the chassis was done, and the center bezel was cut I then decided to go ahead and re-paint me entire dash including the gauge cluster, center, and air bag cover to better match my paint, which along with some more custom work I did in the back pretty much became a way bigger production than when I started! Anyways, the dash is pretty close so here is a pic for you.
And I am still working on some things with it, but here is the other half of that project.
When I did it, i needed to cause of where my other DVD is located at the moment, but if you have that space underneath available, why not mount your Switch Panel either down their, or maybe vertically somewhere in the center console, or I have even seen where people have made a custom chassis and actually mounted things into the face of the drawer under the passenger seat. Just some thoughts on other ways of putting it together.
Either way, if you have any more questions, please feel free, and I would be happy to try to answer whatever I can anytime!
Go easy,
Candyman