Any person subject to the provisions of Code Section 47-2-334 who is employed pursuant to Code Section 28-4-3 or 45-15-31 in a full-time position requiring admission to the State Bar of Georgia as a condition of employment may make an irrevocable election to become a member by so notifying the board of trustees not later than December 31, 1998, or within 90 days after becoming so employed, whichever date is later. Any such person shall be credited with service in this retirement system only for actual service in such position. The Employees' Retirement System of Georgia shall transfer to this retirement system all employer and employee contributions paid by or on behalf of any such member with regular interest thereon. The member is authorized, but not required, to pay to the board of trustees such additional amount as the member desires, each payment to be made within 12 months of electing to become a member of this retirement system. Such member shall receive only such creditable service, not to exceed the actual years of service, as that amount will warrant without creating any accrued liability to this retirement system calculated as if the member had either elected or rejected spouse's survivors benefits at the member's option. Any such member who was vested in the Employees' Retirement System of Georgia at the time of making such election shall be vested in this retirement system but if applicable shall receive a retirement benefit reduced as provided in Code Section 47-23-102. Such persons shall be subject to all provisions of this chapter applicable to solicitors-general of the state courts.