Anything above that valuation is basically your option to work.So, I would say most of us are capable of being financially free, but a lot of us choose to work because we want to live in a higher quality place.If we get back to the 3 to 5 year time frame proposed by the OP, yes, it's quite doable.

Vacants are actually vacant, common areas, turn over quality, matching expenses with whats actually done, capital improvements etc.

There are some very creative ways to stretch 100k-200k to buy several quality properties in a responsible and expedited fashionFinally, you'll want to consider what each Turnkey Company can offer you.

Lots of houses with terrible basements & poor quality additions. 

In general what qualities care you looking for and what skills are expected ?

Example Quad propertyHere is a current 7 unit rental for sale at $630,000 with a neighboring unit renting for $900 a month with 2 bed 1.5 baths, so that may be the prevailing rate there. 7 unit condos for saleI am not interested in these properties in particular, but just want to provide them as examples if anyone wants to take a look and compare them to the other apartments in the area.I suppose that at the right price you can make a case for any purchase, but the competition for tenants (with perhaps a need to be more flexible on tenant quality) and the need to keep rent rates stagnant or lower them to ensure high occupancy seem like troubling considerations.  

If so, what are the ramificationsb)How to deal with tenants who has low credit score (but all other qualities look good)

I could have all the bills sent to me and log into the bank account remotely, but I cannot really check on the quality of any work that is being done.

Point out to the appraiser items that are new or of especially good quality, as well as unique features that might improve it's value.

I would also need to find an agent to work with, so if anyone has any recommendations for quality agents that they would recommend that would be very helpful.