Hi, I'm in 7b, Atlanta, GA.  It's ok during the day right now, but at night it gets to 29 some nights.  I'd be safe to plant them in the day, but I wish I had a stretch of nights that were in the 40s or 50s.  I'm afraid my heeling in isn't right, and while the trees are brittle or anything, I am afraid if I don't plant them they'll die.  I'm afraid if I do plant them, while the nights are cold, they'll die.  Leave them heeled in?  Plant?
 They are chickasaw plum, fuyu asian pear, stella cherry, persimmon, and a few apples.  They are 3/4" on some, but some are smaller, maybe 1/4".  A couple of them are an 1" at the union.  I have 10 trees and they cost a lot of money.  Any advice is appreciated.
 I was going to rent or buy an auger for planting, but maybe I should wait?
 Thank you for any advice.