Now FM Donut Bakery is thinking of changing its capital structure. It's current capital structure is 50% debt and 50% common equity. The company is thinking of changing its capital structure to 70% debt and 30% common equity. Currently, its common stock is traded at a price of $10 per share and the stock is in equilibrium. The company has just paid dividends of $1.10 per share. The perpetual common dividend growth rate is constant at 5%. The risk free rate is 4% and the market risk premium is 6%. FM has bonds yielding 7%. The investment banker estimates that the before-tax cost of debt would be 9% after the change in capital structure. FM's tax rate is 35%.

Required

 How would this proposed change in capital structure affect its WACC?

 Should FM change its capital structure?