Any person desiring to purchase such lands shall file his application for the purchase of same with said lieu land commission upon application blanks to be supplied by said commission for said purpose, and said commission shall fix the price to be charged for said land; provided, however, in no event shall more than one hundred sixty (160) acres of said lands be sold to one (1) person within one (1) year, and in no event shall said lands be sold for less than the fair market value of the land. If the commission approves the application, said application shall then be forwarded to the superintendent of education of the county owning said land. In the event the superintendent and board of education approve said sale, the approval by said board of education being made by order of said board duly entered on its minutes, agreeing on the purchase price of said lands, then the Secretary of State and the Governor shall issue to such applicant a patent to such lands at and for the price agreed upon, such patent to be signed in accordance with the law governing the issuance of state patents. The money received therefor shall be paid into the proper principal fund as provided in Section 29-3-113. Provided, however, the proceeds from the sale of such lieu lands may be used to purchase equivalent lands in the county which owned such lieu lands so sold, said purchase to be made as provided in Section 29-3-27.