Accessible from anywhere.  

Lastly, look for access to mass transit, major traffic routes etc.

My goal is to continue acquiring properties and eventually pay one off by shoveling a portion of the net from all the properties into one of the mortgages.  

I know that I have access to the calculator since I’m Pro but I really don’t understand what I’m doing.

My ultimate goal is to build generational wealth and be as hands on as possible in acquiring and managing my real estate endeavors.

Tenant has access to video and can upload to cloud, though an app, but landlord can't access that. 

One of the ideas that I'm evaluating is to acquire a small piece of property within the city limits near a train station of local towns such as Farmers Branch, Carrollton, Lewisville, Plano, Euless etc,.

Some use dozens of different apps/websites to help them acquire/manage their properties.

I agree with Jonathan, you purchasing the rental and acquiring the tenant means nothing to them except they pay rent to you and your responsible to uphold their current lease. 

I believe this method is good to acquire multiple properties that will be paid down by your tenants.