Dinklage Corp. has 2 million shares of common stock selling for $60 each. The firm just paid a $2 dividend expected, starting from next period, to grow at 8% forever. The firm has 90,000 30-year bonds, paying $85 of interest annually, quoted at 100% of par today. It also has 112,500 20-year bonds, paying $28 of interest semi-annually, each quoted at 80% of par today but the price of these 20-year bonds is expected to grow by 0.5% next year, all things equal. Face value is $1,000 per bond. The tax rate is 21%.

What is the firm's weighted average cost of capital (WACC), in percentage?