Well, you went to a lot of work on the D710 faceplate, but it does solve the problem. The thing I liked about the Jotto faceplate I found was that it already had a back to it so I didn't have to fabricate the additional bracket like you did. But, what you've done certainly works.
Now that I've mounted my D710 head in the console, I'm not crazy about the location. Since I'm into APRS, I'd like the head to be more visible. So, I'm now contemplating mounting locations in my F-150 that will get the head closer to my line of sight.