The only debilitating factor is the >20% down payment.

Since the niece wasn't the tenant, and I'm guessing that evicting someone as painfully and extremely debilitated as the aunt (extreme arthritis?) 

In fact, they only worsened my already debilitated confidence by telling me they were concerned that my activities might be unlawful.So it wasn't anything specific yet that he told me per say, that i remember, about what Im doing, other than just the general premise that I am selling (assigning) my contractual rights.

And what if I or one of the tenants have our own disability, involving debilitating fear of dogs?  

DO NOT ACCEPT MONEY = BEST PRACTICE.Health can be a consideration (I have seen it personally with my own properties) but it would have to be debilitating condition involving health and family services or some other agency to have any adverse impact on the overall posture of the proceedings.The entrance of a judgment and/or order of possession does not depend on his presence. 

It was biggest mistake I've made, not debilitating, but I won't buy them anymore.

One fall or injury will debilitate your business plan.

You have no idea if this seller has a debilitating medical issue, a death of the main income producer in the family, etc.

See below:Individuals may qualify for a registration identification card by having a debilitating medical condition listed in the statute.

If she were to go underwater or had problems with vacancy, it seems like it would be debilitating and catastrophic.The other is logistics.