In addition to, and not by way of limitation of the powers prescribed in § 14-92-220, the board of commissioners of a suburban improvement district shall have the powers to:
(1) Make and execute all contracts, leases, conveyances, and other instruments of the district;
(2) Join with any other political subdivision, municipality, district, or governmental agency, either state or federal, in the acquisition, construction, maintenance, operation, and financing of any of the facilities, works, or operations authorized by this subchapter or as to the performance of any of its functions;
(3) Establish rules and regulations for the transaction of the district's business and for the services, use, and right to use of its facilities or services, or both, or to effectuate any purpose of this subchapter;
(4) Do all things incidental or auxiliary to the exercise of the express powers granted by this subchapter; and
(5) Perform all actions useful to carry out the purposes of this subchapter, unlimited by any express provision of it.