But again - no way to know the size of the fallout until it happens. 

Screen and approve the applicant like normal.

Tells prospective guests too that if they plan on having a loud drunken party, our house is NOT the place to do it, so it works as a screening tool.  

Does anyone have experience or advice on how to choose the right size?"

Even if the credit card debt was $0, your DTI is way too high to qual for any new traditional/conventional loan until the units are rented.If youre going to keep this duplex, I'd focus on getting one of the units in service as fast as possible.It sounds like there is currently a decent-size lien ($7300/month) on the property.

An insurance broker explained this to me in the past as the law of  large numbers which suggests if a a carrier has significant enough exposure in a market the probability of claims arising will be more consistent with probabilities calculated in their underwriting than a when a smaller sample size were to exist.

Quote from @Kyle Swengel: Go to NETWORK at the top of your screen and you can search for other investors and investment groups in your area.

On the Development risk side, I told her I would never put us into less than a breakeven deal potential.Development there are far too many moving parts even though our process control is broken down into bite sizes.  

Screen tenants properly or pay a good PM to do it for you3.

Hello colleagues, we manage a medium size apartment (73 units).