Seems a strange time to be planting kiwi. I would recommend the spring, myself.
VERY important facts to know about kiwis. First, they are late sleepers. Second, it can be very difficult to know they are alive when in the dormant state. They defy the scratch test. I pulled out three kiwis three years in a row because I believed them to be dead. I went to yank out a fourth kiwi, cursing my hard luck, but I got side track. Two, maybe three weeks later, I go back to pull it out and it had woken up and was growing. I felt like such an idiot.
My luck with plants in boxes, is that you have to be there to buy it when it falls off the truck. They get zero care at the nursery/grocery store/wherever you saw it. If you don't know how long the box has been sitting there, don't buy it.