As CFO of a major corporation, your Treasurer$$s office has reported a total market equity value of $$500$ million and total market debt value of $$550$ million. They also report a percentage cost of equity and debt of $14\%$ and $8\%$ respectively. If your firm faces a $23\%$ marginal tax rate and is consider an investment project with an IRR of $13\mathrm{.}9\%,$ what is your companies WACC and what decision should be made regarding the investment?