How did you derive $160/month? 

Unless there are tons of Bear Sterns & Lehman's hiding in the shadows with derivatives and subprime mortgage packages to drop on our heads?

I will apply my free nights and weekends on extra curriculum activities (i.e. real estate and its derivatives).

Laws aren't made to give investors a road block in making money, they are made to protect owners rights, equity, use of their property, quiet enjoyment and the fruits of the land (fruits of the land meaning profits derived from their ownership).

He taught the principals of leverage, both with money and multi-units and for that I can only assume the posters are financially maybe a) unaware of the value and haven't purchased his materials, or b) just naysayers because of all of the people who came after, or c) didn't have perspective on what value they might derive from the information kit.I for one believe the information was spot on, and perhaps even too difficult for most to comprehend and put into play, because it was outside the box thinking and truely is hard to pull off with the square-peg round hole RE agents, sellers and financial institutions that we label conventional."

I recently took very early retirement from working on Wall St. in NYC and I have a master's degree in FE so I am very much tune into the financial markets (equity, FI, derivatives, etc). 

@Wade KulesaI believe Dave Ramsey's 10 year number is derived from the common real estate cycle, as 10 years is the time to complete a real estate cycle. 

Securities and derivative trading not so much but more so since the advent of online forums and platforms. 

Explain your formulasNot my formulas, I'm not nearly clever enough to derive them myself, but I'd be happy to point you to my sources Joe. 

Then have an attorney form the LLC and draft an operating agreement if you intend to use an LLC (sole member would have to be the SDIRA with you as the manager deriving no income personally).