First, you need to look at your current retirement account and see where your funds are invested and what kind of returns your account been generating over the last few years.

When a single business of this type could generate cash-flow= 30-40 units at $200 dollars a door- which would you do?

As a result, I am looking to parlay the income I do make from it and put it into more passive means of generating wealth.Therefore, my plan at the moment is to take the money I'm making from my business and throw most of it into income-generating property.

A SFM may very well generate more cash flow than a multie.

BUT, if you don't have the money to buy 10 properties, you need to focus on a cash-generating strategy such as flipping or wholesaling and IGNORE Buy and Hold for now.  

The property type, income generated (if any) and total due secured against those assets is relative to give feedback on those.  

I think your advice holds a great deal of value for my particular situation because of two reasons:  1)  I'm 27 and will hopefully have many years of income generation from this house.2) We're about 70 miles from DC, and the area around DC seems to be constantly developing and expanding. 

Welcome to the site, @Sonia Alvarez  I'm not sure if you're asking if Real Estate can help generate more income or not.  

Joe Gore a limited liability company does just that limits liability to just the assets and revenue generated within, and does not extend to the personal assets of those that are apart of it.

Unless Ingersoll has moved since my uncle built buses there 40 years ago, I would be suspect on any quadraplex in that price range (>100K per unit) generating anything near 10% return, let alone 17%.