Q.Spacing of fruit trees
We’ll be planting an Asian persimmon, a Chicago hardy fig, a hardy kiwi with its pollinating partner, and a pomegranate in our backyard. All have guaranteed to do well here in zone 7. I would like to line them up along the back fence. How close together can they be?

Here are some links for you that will help set some guidelines.
http://extension.oregonstate.edu/lane/sites/default/files/documents/tree_fruit.tf_specialists.pdf
http://www.fruit.cornell.edu/mfruit/kiwifruit.html