Cash Flow: Pay Off Principal, Reinvest, or Income

[Phillip Stagg]

So the way I have my real estate loans structured is a 7/25 intrest loan with a balloon payment after 7 years.  The discussion keeps coming up as to wether during those 7 years I should put any cash flow towards the principal, take the cash flow and reinvest in more homes, or use the cash flow as income.  I would only have to refi the homes at the end of the 7 years for another 7 and keep doing this.  Ideas??