There is a competitor in my market, talking with the owner he bragged of this model I mention above.

Not sure what market you are in, but I would talk to some lenders about FHA options on a 2-4 unit property.

You need to actively talk to people about what you are doing, ask them for referrals to others that might be interested. 

I've been working with a mortgage broker but haven't had the chance to talk with him about this as an option yet.

Sometimes they turn out to be legit and that is just how they talk/type.I wouldn't call em.

They talked a good story, but their investor support was very lacking.

Or next meeting is Feb 20th, and we have some guest speakers coming to talk about DST investing and 1031/721 Exchange 

As noted, if your options are Reg D, private offering vs fully registered public offering, even if you are talking Pink Sheet (OTC) stocks, you have public filing costs, annual audit requirements, and likely more on-going expenses that have to be covered by the property(s) owned by the offering.  

If you tell the constable that you are concerned about damage, they may talk to him about leaving responsibly.If you are concerned about violence, have a means of defending yourself and let him know it.

The detective is not an expert in contract law and doesn't know what he's talking about.