Hey Russ, nice to see a fellow Kentucky member on here, even tho we are about as far apart as you can be and still be in the same state! I’m in far NE KY, in zone 6b, near both the Ohio and WV borders.
I have been thru your area a few times, my kinfolk are in OK, and we drive thru Paducah right before we cross the river into Missouri. The terrain is quite flatter than here, and I imagine warmer in general, hence you being in zone 7.
Unfortunately, I can’t offer any stone fruit performance reports from our place as our peach trees have only been in the ground for a year, and a couple were planted in March. Peaches are hit and miss in the eastern part of the state, but are a better shot where you’re at. Apricots are even more of a long shot here, because they’re very early blooming. I considered adding some 'cots this year, but decided against it, as why bother with a tree that prob won’t produce most years?
Our soil is called Shelocta loam, and is generally a well draining soil, but it is very acidic, running around 5.0. Some plots are better than others, but where I have some apple and peaches, the pH is 5.0, not ideal for either fruit. If I knew it was that acidic before planting, I would’ve limed the plot to get the pH up. My peaches struggled to get going last year, the apples did better.
I got a soil test done on that plot this year, and applied lime and fertilizer to the trees that really needed it. The peach trees seemed to really have responded to it already. I’d suggest you get a soil test done, your county extension office can run your soil samples. It only cost me $3 a plot.
We have, however, been to a large orchard near Paris, KY, called Reed Valley, and they grow lots of apples, some pears, and peaches, along with various berry types. Last year they didn’t get any peaches due to a very late frost, in May I believe. This year, they had another freeze after bloom time, and they’re in a wait and see mode on how much they’ll have that come to fruition. Here is a link to their site, and this page shows what varieties of all the fruit they grow:
I kinda based what they could grow in our region for what I planted on our farm. We have Redhaven, Coralstar, Blushingstar, and Contender, which they also grow. I also consulted a University of Kentucky evaluation of peach and nectarine varieties, as far as cold hardiness, bacterial spot resistance, yield, etc is concerned:
Here is another UK write-up on growing peaches here:
For rootstock evaluations of various fruit trees, this is a very informative study from UK as well.
Another member from the forum, like @Lucky_P, who is in the Hopkinsville, KY area, might have some info for you as well. But like @fruitnut, and @scottfsmith said, @Olpea has a peach growing business in Kansas, and can give some more detailed insight.
Good luck with your endeavors, and welcome to the forum.