@subdood_ky_z6b - I’m less than 1 mile from the KY border, so let me first say welcome and that its nice to see someone else in the KY/TN area. (I also went to grad school at UK in Lexington and love your part of the state). I think you’ll do pretty well with peaches. Some years you (and me) will loose your whole crop to late frosts, but that’s just been 1 out of 4 years for me- though you might get hit more often. Overall, I’ve done pretty well with peaches, but of course they are very high maintenance (I spray every 10 days or so). Of the varieties you listed, I’ve only grown Reliance. ITs a good peach, but while its reported to be more cold hardy, I’ve found it to be about the same as most others. My favorites for this area are Elberta and Contender, but I’ve had pretty good luck with several others. For whatever reason, I find white peaches to be a little more susceptible to a variety of issues, but that may just be me. I’ve only been growing for 4 years and don’t know 1/100th as much as most people here, but because we are in the same area I wanted to comment and let you know peaches are certainly doable here.
BTW…when you have time, make sure you go and locate yourself on the Growingfruit.org member map. You’ll be the first in KY I think and there are only 2-3 in Tennessee.