For me I  maintain a minimum of $75 per month.  

Way to stay positive!

My lease requires tenants to maintain updated contact information.

@Andresa Guidelli I have no experience in Philly... but in my market the alarm company contracted to service/maintain the alarm provides the monitoring service.

Can anyone share what investors do once they get a positive monthly cash flow and how soon will they use the money they save or earn to buy their next deal?

I have many properties and a solid position with a 401K in the stock market.

One possibility is that as the revenue comes in over time, it will build up your equity position so that at year "X" you would eventually split the sale of the home 50/50.

Is your desire to finance 100% because it genuinely works and makes sense  or because you don't have patience and discipline to get a down payment.If you finance 100% and are in a position where you need to sell it sooner than later but have little equity, you will probably have to come up with cash to sell it off after all costs involved with selling.

What I have found when speaking to attorneys on 1st position notes and getting a deficiency judgement is it can cost $1,000 - $3,000 to get the judgement, and unless they have other properties as collateral your chances of seeing that $ is slim to none and slim left town or you hope slim hits Powerball or megamillions.

Negotiate from a position of financial strength!