Raspberry Varieties for North Carolina
I'm in the North Carolina Piedmont region, just north of Charlotte in zone 7B. Temps range from the teens to the upper 90's, and we get about 1400 or more chill hours annually. I know that raspberries don't care for our hot, humid summers, but I've had modest success with several Heritage plants in part shade over the last few years and would love to experiment with another variety or two.
In my research so far, I've seen evidence that Jewel (black), Blackhawk (black), Royalty (purple), and Nova (red) might be adaptable to my climate, so they're on my short list. My preference would be Caroline, and I've read a few things that make me think it might be worth a try, but then Nourse says that Caroline doesn't like heat and drought (I can irrigate, but I can't do much about the heat). Any other suggestions or feedback about the above-mentioned varieties?