The Building Authority may enter into any contract necessary to acquire the right to use or the ownership, or both, of land leased and improvements sold by it under § 5-12-42, and any other improvements made upon such land, and capital equipment needed for the operation of the improvements or property to be acquired by it pursuant to § 5-12-11, including lease, lease-purchase, and, subject to compliance with the provisions of S.D. Const., Art. XIII, § 1, installment purchase contracts. No term of an installment purchase contract may exceed thirty years. The authority may establish the terms of the contracts, subject to the approval of the Governor. The authority may include in such contracts the following provisions:
SDCL 5-12-43