@Sooyeon Kwon Regarding the first question, there's no harm in trying too early.

My view is that inflation will erode the value of the fixed debt and you will capture more of the gains and avoid some of the harmful impacts of inflation. 

If you are pretty comfortable and liquid and can absorb the months of breakeven or slight loss without a material harm to your personal financial situation, you should probably hold out. 

Asbestos siding alone isn't harmful if you leave it.

Anyone harmed by him, I haven't seen any evidence on google  that a class action suit has been done against them.

Between paying a realtor commission and other selling costs, plus the buying and financing costs, you'll likely need to buy at no more the 88% ARV in order to be able to exit without harm. 

I am a recent graduate going into workplace.

Hunter Harms As someone who follows miracle morning as well - each person needs to setup their own system.

The major risk I see in harming the price of multifamily is deflation caused by an economic downturn.  

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.