What if one of you dies and the inheritance goes to a relative that wants to sell or can't afford the mortgage or is hostile or moves in and is very disagreeable or moves in & does drugs and sells drugs?

I would even require bank statements, schedules, regular doctor visits, job searching or physical therapy or efforts to become self-reliant, etc. as a condition of SSDI -- partying, alcohol, drugs, smoking could revoke their SSDI.

@Adam M.Is Kevin a drug dealer or involved in some other type of shady business?

If someone was in the streets doing drugs or killing people would they call you - no.I would consider letting them out of the lease but if they stay i would squash this immediately and say I have no control over other peoples property. 

Also my friend live nearby said the property is in a drug dealer territory.

We also have a crime free/drug free addendum as part of our rental agreement that is explained and signed by tenants.  

I had a tenant apply, but he told me he was charged with a felony for drug possession in 2018.

His soon to be exwife and ex stepdaughter reached out to me and sent a video of his stash but my attorney said it wont be any good since it doesnt have a recent timestamp on it or a video that he is using drugs in the unit.

Are they selling drugs?

I was told that indpendence is a high crime drug area (this was by someone who lives in the overland park area - friend of a friend - not a real estate person).