As a financial manager, which method do you advice me to use in determining the cost of equity for firms?

In determing and managing the cost of capital you should take into yourconsideration the follwoing items;

1- the Net Prest Value of the project 

2- The Internal Rate Of Returen

3- The Pay-backPeriod for the project

4- The Current intrsat reate at bank

5-The Internal grow percentage of our business

6- The related risk of each type of funding resource.

Thank You for the invitation