The governing authority of a governmental body, in determining the cost of a project to be financed by the issuance of revenue bonds pursuant to 90-4-1205, may include:
(1) engineering, inspection, fiscal, and legal expenses;
(2) interest estimated to accrue during the construction period of the project and for up to 6 months after the construction period on borrowed funds; and
(3) costs of issuance of the revenue bonds and the funding of a debt service reserve to secure the revenue bonds.