At any time subsequent to April 26, 1984, an affected secondary electric supplier whose distribution facilities are subject to the provisions of this article and whose facilities may be purchased pursuant to this article by a primary electric supplier may, in its discretion before the closing of such purchase, seek judicial determination of the legality and validity of such purchase of facilities pursuant to the provisions of this article, and all other questions of the legality or validity of the provisions of this article. Such judicial determination shall be had upon the filing of a complaint against the citizens of the State of Alabama and against the affected primary electric supplier. Such complaint shall be filed in the circuit court of Montgomery County, Alabama which shall have exclusive venue for the determination of all questions of the legality and validity of the provisions of this article. The filing of any such complaint shall stay the dates established for the closing of all sales of facilities pursuant to the provisions of this article until, with respect to each situation in which intent to exercise the option to purchase has been announced, a date is established by the mutual agreement of the affected primary and secondary electric supplier, which date shall not be in excess of 90 days after the final resolution of the action to determine the legality and validity of the proposed transaction as well as the legality and validity of this article, including any appeal therefrom.