Good because there is really no other way other starting with little capital but bad because of the entitled tenants and un scalability.

I am trying to figure out a scalable way to follow up on MLS offers. 

What I can say though, is with a $300 monthly marketing budget, as long as you're not in a super competitive market you can mail out a good sized list - 750 first class postcards a month full service in a scalable fashion as long as you put together your own list, and close a deal within the first 6 months (first 2 months if you're in a secondary market) and have a lot more funds to market with after you close your first deal via DM.

You also have to think long term as well when it comes to scalability.

If I had better scalability, I'd increase rent $25 every 12 months on the dot.

The problem with this is it isn't very scalable - you'll eventually run out of cash. 

I want to begin their formation of an empire (scalable) by starting a LLC.

Kind of forces you to move forwards to scalable investing.Just my opinion of course.

Rents also increase over time.The dollar per door is not the efficient metric to measure for imo 1. as I said above, it's not an accurate representation of profitability. and 2. gauging a good return is only possible when you consider opportunity costs, scalability, and repeatability.

@Justin M Christian What are you odds are of creating a market ready, scalable software product that is based on other people's pain points which you are unfamiliar with?