There really isn't a safe, secure way for someone to protect their interests.

., your tenant stops paying, you're still in a relatively safe position.

You are literally loaning your hard earned money to someone else who will also get a loan on top of your money to acquire some property for a fantasy proforma based on too many moving parts where no one is safe. 

I’ve been shown no evidence that there was fraud, nor that the sale of the investment opportunity was not in compliance with either the General Exemption for Private Placement or Reg D safe harbor.  

You can throw that $550k into an annuity (or similar) and get a decent (and very safe) return.

That $2M would be worth $100K on a safe 5% withdrawal rate at that time.

(N.J.S.A. 2A:42-10.16a).If a tenant habitually pays late, you then can go to court more safely and not have to worry about them coming even at the last minute.

Do your due diligence.furthermore, are there any burnout houses close by, is it in a safe neighborhood, is this in a rural area, is it a metropolitan area, what's the economy like there, just because other places nearby are renting doesn't mean that your house one block over is not next to something that is uninhabitable, or poses a security risk, or maybe near an abandoned field, a graveyard, an airport, many different factors there to consider.  

Also don't forget you get to add team members which I hope is safe to say you have given the amount of doors you own.

Guns done kill  people do.. well sub 2 does not kill sellers the people that do sub 2 with bad intent with not enough money etc etc they are the ones killing the sellers the sub 2 is just the vehicle that led to financial mortality for sellers in a sub 2 gone bad scenario.. and U cant have thousands of students who you know for certain have neither the capital or character to pull these off safely for the Seller..