Consideration by Planning Board. The Planning Board shall consider the proposed site development plan from the point of view of the standards and purposes of the regulations governing planned retirement communities so as to achieve a maximum of coordination between the proposed development and the surrounding uses, the conservation of woodland and the protection of watercourses from erosion and silting and a maximum of safety, convenience and amenity for the residents of the community. To these ends, the Planning Board shall consider the relationship of land uses, interior streets and other features with respect to the topography of the area and existing features, such as streams and large trees, the adequacy and location of the open space area provided and such other matters as the Planning Board may find to have a material bearing upon the stated standards and objectives of the planned retirement community regulations.