Does it make sense to put down more than 20-25%

[Peter S.]

Let's say I want to purchase my first property for 100-120K. In order to secure a loan I'd need to come up with 20-30K. 

Does it make sense to put down more than the minimum down-payment in order to decrease the P+I and increase cash flow? 

Would it be better to leverage as much as possible and use the extra capital for cash reserves or to start funding the next property?