I would like to have more information on how the mortgage notes work.

I would consult an attorney for contracts.  

Shouldn't be an issue in most big cities having a list of cash buyers that are just dreaming you will bring them a 70%-repair deals. 

Sales or leasing offices, however, are eligible for verification.I've listened to a few podcasts and heard other real estate investors mention being registered with Google so I'm wondering how they are getting around this.

Some people/investors see a property and want 100K++ return when the property is listed for 100K and the return should be more like 10K or 20K..

I'm not sure if most investors would be open to this deal structure for equity if I presented this to them. 

Did they allow you to grow your portfolio faster than traditional financing would?

Yes.It sounds like you could use professional assistance, but it would be nice if you could get the guidance for free.Airbnb pays "Airbnb SuperHost Ambassadors" to guide and advise new Hosts, with no cost to the new Host.  

Any advice from those who have done a DSCR before, would be helpful.

Anyway, the 2 cities I am interested happen to be in states with HIGH property taxes.