An applicant proposing to develop lands in accordance with the modifications provided for in subsection 26-21.5 shall first submit a preliminary subdivision plat to the Land Use Board in accordance with zoning standards for area, yard, height and bulk requirements of subsection 26-21.3. After approval of the plat by the Board and Borough Council, the applicant may then submit a plan in accordance with standards and conditions of subsection 26-21.5 showing exactly the same number of lots as shown and agreed to in the original plat subdivision.