If I can write a piece of software that eliminates some office function (e.g., loan underwriting) or a robot that does a job formerly performed by a person, I can make a lot of money.  

Or do I need to show just cause if it ends up in the courts?

Zillow can be a helpful guide in some ways but the actual documents recorded by the Clerk of Courts are your scripture in RE. 

If you lived in ATL, knew the market like the back of your hand, and could maintain local control over your investments there, I'd say go for it ... but you don't live in ATL, you live in LA, so my advice is invest in LA at least starting out, where you have home court advantage.

I currently have a certificate of sale, and it could be months until it is motioned in court.

However, some companies will write "Functional Replacement Cost" for older homes.  

If you are compliant with you minutes, filings, and no funds are transferred back and forth or commingle, you have a barrier of protection in the eyes of the court.  

I just finished purchasing my next project at the court house steps and I am working on a few more.

I just finished purchasing my next project at the court house steps and I am working on a few more.

If there were an issue (like if the seller accepted a higher offer after accepting your offer), your contract would not be enforceable in court.