Have you considered a zelkova?

I believe Zelkova is susceptible to Dutch elm disease. Also, it is not quite
hardy in the area under discussion. Chinese elm would be a better choice.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)