When using rental property calculator

[Joshua D.]

When using the rental property calculator the first 2 properties i paid cash for and the next 6 i used lines of credit from the previous property's. In that case when using the calculator do i just put in the loan for the amount of line of credit i used and the interest rate? Also when the question appears interest only yes or no? i pay the interest and another 100 to pay the balance off so that would be no correct? Also i put in 10% for property management even though we do it ourselves. Figure in the long run will do that but with 9 properties now we should be okay is that right also?