Anyone have experience as a business owner who regulary sells inventory product to the public in how to deal with handing so much of your hard-earned money to Uncle Sam?

You can secure it somewhere safe on the building and change the codes as necessary.

@Seth Razor Write a promissory note secured by each property.

Sewer line - I have the sewer camerad during your due dilligence.Feel free to reply back with any further questions publicly or privately.  

Anyone can post anything on a public site.

You are already an accomplice, and now you've posted your intentions on a public forum. 

That said, you'll want to be very mindful of location: Many parts of Austell are in or near active floodplains, as evidenced by the catastrophic Flood of 2009 (https://www.weather.gov/ffc/atlanta_floods_anniv).The City of Austell Public Works Department provides comprehensive Floodplain Management services, including education, mapping, and many other resources, at https://www.apwsm.org.

If he’s willing to carry the note for ten or fifteen that may work but I’d sure hate in 5 years, to be on the hook for over half a million dollars and be scrambling to secure funds to save my butt from losing everything .

You will get decisions to them immediately, pay for rightful change orders without delay, that you have secured financing and have the required amount of cash on hand to cover any discrepancies in the draw schedule, and will provide X number of units a year.

So after go back and forth with the seller to strike a deal that made sense for the both of us, I secured a buyer that was instantly ready to buy my contract and we just closed escrow 4/26/2019.