Great stuff Mike. My radio is mounted to the center console also but underneath the cupholder, since i've got a removable faceplate I don't really need access to it as much. I would worry about kids kicking it back there, personally, I'm sure it will be fine though until you think of something else- would it fit in a single din radio slot?
One thing you can do on your antenna mount for added peace of mind is move your hood over a little bit- just loosen those 4 hinge bolts and shift it like 1mm or so... not enough to create a big ugly gap but just enough to take the edge off the wire?
And let me know if you need any more mic holders!