Appraisal, Mortgage contingency, the chance of the appraisal coming in low, or you not qualifying or the property not qualifying and the deal falling apart.

cap rates at historic lowes, so i think your asking....can they go lower?

laminate floors look very good and probably best in low end flips.

Seniors with Low Financial Stability Scores might be one list to think about.

The response rate is extremely low and it requires a lot of follow up in order to generate leads.

Obviously, I don't want the tenant to move, but their rent is really low. 

Not likely.Your expenses may be a little low. 

I did based on my gut feelings and also what the former owners said about them, the ones I went up by 200 called on everything and the ones I went up less on were low maintenance.

You can have a low-tax or even tax-free cash flow from renting, and often you can have tax losses that would reduce taxes on your salary.These benefits start getting squeezed out when your income is above $100k, but they still exist.What @Yonah Weiss mentioned is an advanced loophole for people with high income, however you will not be able to use it as long as you have a full-time job. 

Your donations of whole numbers were found to be too low and not acceptable.Increase your donations for better response rate...