I pay myself and my wife a combined 120k/yr for this service (5-7 homes per year).2) My previous 19 SF BRRRR's are cash flowing 74k per year (P.I.T.I.) and in my current model, this Cash Flow is increasing by about 25-30k per year. 

We are/were hoping to put a $60-70k down payment on a higher-end 'A' new build property with Rent to Retirement as I really like their business model/community, rather than a smaller down payment on a refurbished property in a 'C' area.

Cash flow varies unit to unit and seasonally, but is consistently a viable business model. 

I again suggest going back and reading my actual words and statement's, detailing how the books are cooked, I never detailed illegal activity, I detailed an executive branch changing how data is compiled and calculated because they didn't like the result, so instead of changing input's, they changed the calculation models until results fit the desired narratives. 

Look at each facet of that business model.  

What is your business model?

Equity splits, fees, preferred returns..all important aspects of underwriting and structuring a syndication deal.I first recommend starting with an underwriting model that is built to underwrite syndicated deals.

I’m hoping to get specific details on this business model before making a decision to move forward and spend the money on the live 3day course ($5,000 for the course).

The business model makes it actually really hard to really screw up in a big way.

For larger projects, in the many dozens of units/lots range, the builders use financial models to determine land value.