I just completed mounting the first latch. I used the dimensions that I show on my drawing. As I do not have the inner skin on my door, the mortise is just deep enough for the inside of the latch to be flush and the inner skin will cover the mortise.
The key to get the latch into the tight dimensions that I discribed is to step the mortise for the bolt, deeper toward the latch, and then remove the silver backing plate and the pin for the dead bolt and it slips right in.
I just completed it so I will disassemble it tomorrow to put on my inner skin and mortise out the door frame for the striker plate and I will get some pictures.
It looks real nice and has a good finished look to it.