Discuss the significant differences between bonds or savings accounts as investment choices. Explain how compounding can affect the outcome of your investment. Give an example of how a modest $1000 investment could grow over time, and compare that with the results if money were invested periodically over time, rather than all at once up front, say $100/year for ten years. Which investment makes the most sense?
Some other important considerations are:
How will inflation, depreciation or increase in value affect your plan?
Should the method and costs of financing the project be part of the analysis?
Are there any tax advantages to one investment or another?