In the preparation of the master plan, the planning commission shall make careful and comprehensive surveys and studies of present conditions and future growth of the municipality with due regard to its relation to neighboring territory. The plan shall be made with the general purpose of guiding and accomplishing a coordinated, adjusted, and harmonious development of the municipality and its environs, which, in accordance with present and future needs, best will    promote the amenities of life, health, safety, morals, order, convenience, prosperity, and general welfare as well as efficiency and economy in the process of development, including adequate provision for light and air, distribution of population, good civic design and arrangement, wise and efficient expenditure of public funds, the adequate provision of public utilities and other public requirements, the improvement and control of architecture, and the general embellishment of the area under its jurisdiction.