Description of the various residential areas proposed, indicating the approximate building height, bulk and use for buildings in each such area, including the number of dwelling units, percentage by housing type (single-family detached, duplex, townhouse, garden apartment, etc.) and general description of the intended market (luxury, middle-income, moderate-income, elderly, family units, etc.), plus a calculation of the residential density in dwelling units per gross acre (total area, including interior roadways) for each such area.