From the SOFP there are 100M shares in issue. The current share price is 50c per share (from the first paragraph of the question), and proposal 3 in the question says that the shares will be repurchased at a premium of 20%. So they will be paid 60c per share, and so in total $60M.
To get the value of a company we always discount the flows before interest at the overall cost of capital. (We discount the after interest flows at the cost of equity in order to get the value of equity.)