A mixed-use district could form on thousands of acres of land in an area of northwest Georgia poised for rapid job growth. The Aubrey Corp. envisions 16,500 acres between U.S. 411 and Ga. 20 in Bartow County becoming a residential, commercial and industrial hub with greenspace, according to a Developments of Regional Impact filing. The DRI program allows state planning officials to give feedback on proposals large enough to stress local infrastructure in a community….