Man, that's a hard call, but I think you are right about it. Sounds like a good tree for an old man to plant, I'm too old to see an oak mature, lol! I'm also in zone 5ish. 6 might be pushing it for me, but it is beautiful, and sounds like a good bush/tree for birds.... Thanks for the education brother!
Teaching myself too! I couldn't tell you which variety specifically I photographed, but that linked page says the Yukon Belle variety is zone 5-8! I am in zone 6, but pretty close to zone 5. It gets cold here. Seems like it's a pretty hardy plant. I bet you could have success with it.