It's doable just depends on how much work you are willing to put in.

Then you can ask questions that are more detailed to drive you further down the road.Yes it is doable.

Dealing with maintenance issues for a distance, although still very doable, can be a challenge.

I've removed VCT that has taken chunks of sub floor with it, concrete included.As far as refinishing to shiny concrete, this is doable, even refinishing hardwood can be possible.

Either way, it's absolutely doable so long as you like what you do and have a good vision of where it's going and why.I go back and forth on when to leave engineering.

Baltimore or PG county are doable.

MTR management, pending one which platform you use (AirBnB, VRBO, Furnish Finder, etc.) is very doable but also depends on your current property and how you have it set up. 

(snooze, you loose, right!)

Achieving (more importantly justifying) Qualified Real Estate Professional status is doable but complex and you’re going to need your own property in order to justify having annually spending that amount of hours (it is highly unlikely that any QREP audit would hold water based on you (or non W2/1099 income spouse) allocating the required hours on someone else’s passive deal).

This is definitely doable if you can thread the needle of rents supporting the low down properties and you can sustain two mortgages at once.