A Zoning Board of Adjustment is hereby established, pursuant to N.J.S.A. 40:55D et seq., consisting of seven residents of the Township appointed by the Township Committee to serve for terms of four years from January 1 of the year of their appointment. The terms of the members first appointed shall be so determined that, to the greatest practicable extent, the expiration of such terms shall be distributed evenly over the first four years after their appointment, provided that the initial terms of no member shall exceed four years. Thereafter, the term of each member shall be for four years. Nothing in this chapter, however, shall be construed to affect the term of any present members of the Zoning Board of Adjustment, all of whom shall continue in office until the completion of the term for which they were appointed.