(a) Bonds or other evidences of indebtedness issued under the terms of this chapter shall bear such date or dates, mature at such time or times not in excess of fifty (50) years, and be in such form and denomination as the board may determine.
(b) The board may sell, exchange, or hypothecate these obligations from time to time at such prices as shall best serve the interests of the owners of land within the project area, provided that any sale or exchange of the obligations at less than par value shall first have the approval of the chancery court.