Flowers is trying to estimate its optimal capital structure. The current capital structure consists of 25% debt and 75% equity; however, management believes the firm should use more debt. The risk free rate is 5%, the market risk premium is 6%, and the firms tax rate is 40%. Currently, the firm cost of equity is 14%, which is determined on the basis of the CAPM. What would be firms estimated cost of equity if it were to change its capital structure from its present capital structure to 50% debt and 50% equity?