The Secretary shall develop, after consultation with, and with the assistance of, an advisory group of State agencies appointed by the Secretary without regard to the provisions of chapter 10 of title 5, a model plan for the comprehensive automation of data processing and computerization of information systems under the supplemental nutrition assistance program. The plan shall be developed and made available for public comment through publication of the proposed plan in the Federal Register not later than October 1, 1986 . The Secretary shall complete the plan, taking into consideration public comments received, not later than February 1, 1987 . The elements of the plan may include intake procedures, eligibility determinations and calculation of benefits, verification procedures, coordination with related Federal and State programs, the issuance of benefits, reconciliation procedures, the generation of notices, and program reporting. In developing the plan, the Secretary shall take into account automated data processing and information systems already in existence in States and shall provide for consistency with such systems.