At least 5% of the proposed residential units, excluding all units occupied by resident staff, shall be designated affordable units and shall be occupied by persons of limited income as defined and further regulated in Subsection C(5)(c) herein. Such units shall be physically integrated into the design of the assisted-living residence in a manner satisfactory to the Planning Commission and shall be distributed among efficiency, one-bedroom and two-bedroom units in the same proportion as all other units in the development, unless a different proportion is approved by the Planning Commission as being better related to the housing needs, current or projected, of the Village of Pleasantville. In order to provide increased housing opportunities for the elderly population of the Village of Pleasantville, many of whom live on limited incomes, every effort shall be made by the applicant, working cooperatively with Village, town, county, state and federal agencies as well as semipublic or private organizations, to further increase the percentage of affordable units in the assisted-living residence.