I think you did an excellent job on this knife.
The shape mimics almost exactly a carbon steel French chef's knife. The French like a knife that is not as deep at the heel as American knives, so the weight is less, and the balance usually much better.
You could fillet fish. Butcher meat. Cut vegetables. And perform almost any kitchen task with this knife.
For me, shorten the blade to 7.75" long. And, put a full radius on the back of the knife for 2" in front of the handle, so that if you decide to choke up your grip the normal sharp edges won't dig into the web of your thumb and forefinger.
As a former chef, 9 inches is as long of a blade that I want to handle at my age(65).
The handle looks quite comfortable to me.
I also like the sheath very much.
Kudos to the both of you.