Except with respect to the provisions of § 31-13-250, the provisions of this chapter shall not be construed as a restriction or limitation upon any powers which the Authority might otherwise have under any laws of the State and this chapter is cumulative to any such powers. This chapter shall be construed to provide a complete, additional and alternative method for the doing of the things authorized hereby and shall be regarded as supplemental and additional to powers conferred by other laws. However, the issuance of bonds, notes and other obligations and refunding notes and bonds under the provisions of this chapter need not comply with the requirements of any other state law applicable to the issuance of bonds, notes and other obligations and contracts or the construction and acquisition of any housing developments undertaken pursuant to this chapter need not comply with the provisions of any other state law applicable to contracts for the construction and acquisition of state-owned property. No proceedings, notice or approval shall be required for the issuance of any bonds, notes and other obligations or any instrument as security thereof, except as is provided in this chapter.