Quote from @Marcus Auerbach: That's harsh! 

It sounds like a good opportunity and I want to pull the trigger but I wanted to get some reviews since the program is a high ticket of $15K I couldn't find much online about this program or Brian Grimes. 

Some of your requirements come across harsh.

We're exploring creative ways to provide him with the cash needed for the down payment while avoiding triggering a taxable event.One strategy we're considering is purchasing his future primary residence ourselves, making the mortgage payments, and then, once we've built enough equity—comparable to the appraised value of his rental properties—transferring the title to him as a form of exchange.What are your thoughts on this approach?

@Cody Ford Without having specific expenses and the 4th rent amount I can’t say for sure if I would pull the trigger on this property.

So when we did not receive any response to our emails for several days, this naturally triggers concerns and emotions.

Selling would likely mean taking on new loans at much higher rates, reducing your cash flow margin unless the new properties are stellar performers.Transaction Costs and Taxes: Selling could trigger capital gains taxes (depending on exemptions) and other selling costs, eating into your net proceeds.

This is an example of private lending which is different than the IRA owning real estate and does not trigger UDFI/UBIT tax.

I was trying to get started, had all the information but needed to pull the trigger to get in the game. 

Dig into reverse mortgages before pulling the trigger on anything, specifically HECM's (FHA product).