BF Supermart Corporation's preferred stock has $$15$ dividend per share, and is currently selling for $$105.$ The firm currently also has a $12-$year, $11\%$ annual coupon bond with a par value of $$1000,$ selling at a yield to maturity of $8\%.$ The firm estimates that its common stock has a risk premium of $7\mathrm{.}5\%$ over and above its bonds. Given that the tax rate is $30\%,$ the target capital structure is $20\%$ debt, $30\%$ preferred stock and $50\%$ equity, and the firm will not be issuing new stock, what is the firm's WACC?