General approval. The project plan submitted for such an approval need not be completely detailed at the time of rezoning, provided it is of sufficient detail to satisfy the Plan Commission and the Town Board as to the general character, scope and appearance of the proposed development. The approved project plan shall, at a minimum, designate the pattern of proposed streets, the size, use, and arrangement of lots, the basic pattern of land use, with an illustration of a typical example of the development proposed. The approval of such project plan shall be conditioned upon the subsequent submittal and approval of more specific and detailed plans as the development progresses, so that all detailed approvals are complete before work on the project commences.