Sec. 603. In preparing and considering proposals under the 600 series, the plan commission and the legislative body shall pay reasonable regard to:
(1) the comprehensive plan;
(2) current conditions and the character of current structures and uses in each district;
(3) the most desirable use for which the land in each district is adapted;
(4) the conservation of property values throughout the jurisdiction; and
(5) responsible development and growth.