I moved a whole hedge of boxwoods a friend gave me years ago. I would say summer is not a good time to move one. Fall is good before first freeze. Where you live gets a lot of rain so keeping it hydrated should not be a huge problem. Get as big a dirt ball as possible with the roots.
Wife: "You can buy anything you want when you redo this house."
Husband: "Could I get that in writing, dear?"