Or should just waiting for market to possibly crash again would be best bet? 

I bet if you could actually collect all the data behind your success rate you would see that the numbers apply to your model as well but you don’t have to work as hard to get the results anymore.

Last summer I started scouring the web and YouTube for more information on Real Estate investing.  

@NIcholas Hamel I bet it is !

I would bet that there are a bazillion newbie wholesalers that would be more than willing to work for you.If you're not interested in growing your business/portfolio any faster than you're already doing, then offload those leads to other investors. 

AND reading and studying up on real estate) is your best bet. 

@Nathan DobbinsYou bet.

You can always refi anytime and pay off the balloon to the seller.A local or regional commercial bank or commercial mortgage lender will be your best bet to refinance the sellers note.

My goal would be to bring in enough rental income to offset the expenses so that I can reduce my housing expenses as close to zero as possible.I've seen some scattered info on the web that deducting taxes from owner-occupied rentals is a bit different (square footage versus # bedrooms rented out versus pro-rata, etc).

South St Louis County is a better bet.