This act¹ shall apply to any county which by resolution of the governing body elects to come under and comply with all its provisions and requirements. Once a county has selected the County Budget Act to govern its budget procedures, the provisions of this act shall take precedence over any other state laws applicable to county budgets, except as may be provided otherwise in this act and supersede any conflicting laws. Any action of a county governing body to implement, rescind or repeal the application of this act shall be effective as of the beginning or end of a budget year pursuant to this act.