My main concern is my tenants are basically professional system abusers and I wouldn't be surprised if when the constable shows up, they magically have a check with the outstanding rent owed. 

@Najat F Kessler from your description it does sound like the second floor tenants are the main issue here.Are they on a year lease?

Good markets will have lenders that will mainly underwrite the property and not your personal cash flow.You will always hit a limit on SFHs unless you find a niche bank/lender, pay out the *** or you get large portfolio together that a lender will make an exception for. 

We are interested mainly in TurnKey properties, as we are still working full time and are looking for out of state properties.

FYI:  the main unit is listed as a 3/1, but we found that it is really a 2/1 - the 3rd "bedroom" is technically a den and is a walkthrough to the 2nd bedroom upstairs.As we looked at the property late(r) in the evening, we weren't able to view the exterior/roof of the property very well. 

There is asbestos insulation, and rotten sills on both the garage and the main house, and electrical problems (short in the bathroom, no grounds, and not enough AMPS for the house).

In addition, there are a few main components of the structure to consider: exemption status (506b vs 506c), equity split, preferred return, fees and waterfall hurdles.

My main strategy is Fix and Flip, but also watch for good BRRRR properties and want to get into Buy and Hold on Multi Family. 

Therefore, the main thing to keep in mind is that even if a market crash happens on the same level as the 2008 financial crisis, in the long-term (5-10 years), you will still be in profit.

If your main concern is the credit hit I would not worry about it too much as it takes 3-4 months at most to recover.