I completely understand all the financial calculations and models in the system and yes, it would have been fairly easy to build one myself, but very time consuming.  

I want to preface this by saying I'm an absolute newbie when it comes to real estate investing, but the more books and resources I consume, the more I find myself gravitating towards commercial real estate, specifically hotels!

I won’t try to tell you what to do other than if there’s certain properties that just consume way more energy you might consider 1031ing them into slightly larger properties where you could get better economies of scale for your time and expenses.

It was a small $$$ project but time consuming because that was something I DIY'd while living in the property. 

Easy sign up for a sole proprietor.I think new flippers are consumers & don't understand a business mindset.

The amount of reading and information you have to consume to sit for the exam is bonkers. 

No brainer, sell:- area that has historical appreciation far worse than inflation- area that has historical rent growth far worse than inflation- at that rent point there is no cash flow as the maintenance/cap ex will consume a very large percentage of the rent- as described by the thefts, difficulty obtaining PM and rent amount, I conclude the same as other posts that this is a class d area.  

As a few have mentioned, the best way would be to call the listing agents directly, but depending on how much time you want to dedicate, setting and going on multiple appointments with different people could prove to be time-consuming. 

I've done my projects solo so far and it has worked out for me, however, it is time consuming and not in the position to invest all into one deal.

Everyone knows realtors if they are consumer, it's very unlikely a cold call is going to warrant even an answer these days with call screening.