You will also need the incorporation documents to set up your business bank accounts.  

For SFH its squared footage / bedrooms / and area that help command price basically just like apartments.. harder to shop in person for comps so listings on major sites are easy to track by area / map Apartments basically the same way,, but transportation / bus sometimes is a big plus.. and if your in a close nitch with similar size apts I'd recommend go and physically check to see what they are offering,, shop them as I bet they have shopped you.. 

It also included taking time to physically drive by the property and checking out comps.

I've discussed this with a lawyer, I am able to evict based on my zero tolerance for criminal activity addendum, but an eviction with a physically aggressive person doesn't sound like a great idea.

I had learned how to sell options, how to remodel my house, how  to day trade, how to start a self directed ira, I started a Physical Therapy clinic, mined bitcoin, made a few websites, I think I may have even learned how to raise chickens/honeybees/ and grow organic vegetables. 

Is this something that could bring value even if one of us is not seeing the physical property before an offer?

PM sounds like a jerk.. and your stuck defending someone you hired to do the best job possible for you.. they dropped the ball and you need to further monitor what they are up do and doing by physically taking action and checking what's up.  

You also might want to think about incorporating and writing a small business plan to show commercial lenders that you are serious.

When I am asked to stage 3 or more property's at a time, is it physically possible to do it. 

One major appeal is that real estate is a tangible asset that you can physically control as opposed to the the stock market where we have 0% influence on our investments.