Hello and welcome to the vine River.
In response to your query, I guess that if as you suggest the climate zones are similar, then plants should be similar. I have a friend in CA and I think the only really big difference in our growing is that she knows she will get oranges and lemons to ripen on trees in the garden where I am not sure that I would! I have lived in CA and GA but not sure what the climate is like in Kentucky (not convinced I could find it on a map either
)
I suppose this would be a good chance to compare growing notes so if you want some UK seed let us know - sure between all us grapes we could supply most things. What sort of things are you going to grow?