Change your story each month as different stories will resonate with different people AND use each story to emphasize one of your “who do you know…” questions.

If you search around, you'll find the ones that you like best for what resonates with you. 

Properties appreciate in locations that have strong demand, which is the key driver for sustained profitability.In a location where you can make money and you control your property as opposed to the government dictating what you can do.

How much higher interest would be resonable in a seller finance situation?

yea, I was way off base in even suggesting this was sustainable, in my mind I was writing a post about mitigation until you could get them out, and enforcing your lease,  but it came out like this was perhaps viable for the long term...its not...too little coffee and @Nathan G.is right.

While it goes without saying that finding deals is the most important aspect of the business my question would be what is the number one tool or system to have in place to sustain a well-oiled machine and business that could potentially be sold at a later point in time.

Prior to spending the money on other items at the property, be sure to confirm with the roofer if the integrity of the roof was compromised by any of the damage sustained.  

On the alternative, can you sustain cash flow or at least break even in an unexpected market downturn?

The numbers you described resonate hard with me because it's nearly identical to my first rental property.

I hesitate to use those numbers because I'm not sure how sustainable they really are.