As for the two you specifically mentioned Morris Invest has some pretty rough reviews.

Just as a rough idea the lower end of single family houses around my area (East Tennessee) are 100k and less homes, while a high end home would be considered a 300-400k home.

I have lower numbers, roughly 75% are paying.

My realtor tells me and I have seen other postings agreeing a healthy market of that size should be roughly double that.

@Gabriel L. the most often guidance I've read about, received or experienced is that, for real estate investments, you would want to be roughly 8-12% (or higher).

I estimate there are roughly 10,000 leases signed in Milwaukee on an average month.

Kansas City is a great city with some rough migration trends, which is why it's so important to invest in growing neighborhoods within our city.

Don't forget it, it doesn't always work out that way for the trades, and normally there are rough and final inspections. 

Is there a fast way to get a rough estimate on what it will cash flow?

Just curious, does anyone know/remember roughly what price adjustment percentage the DFW market experienced as a correction during the aftermath of the financial crisis and into the Great Recession?