ABC Inc. is considering a project that involves an initial investment of $600,000. The project is expected to produce annual cash inflows of $100,000 for 8 years. The company's cost of capital is 9%.

Requirements:

1. Calculate the payback period.
2. Compute the Net Present Value (NPV) of the project.
3. Determine the internal rate of return (IRR).
4. Assess the profitability index (PI).
5. Based on the financial metrics, should ABC Inc. invest in the project?