There are also others who assist in teaching you DD.Another route is to find a broker-dealer who invests in alternative investments like real estate funds as they will have done a lot of DD on the sponsor as well. 

Sounds like you have a plan to consult with some brokers and expose it to the open market. 

I'm an investor and broker in the Madison area.

I think some commercial brokers will do 4 units.

First, let me say I’m not a lender or mortgage professional—I’m a real estate broker associate based in Miami, Florida.

I do not believe it matters if you start with mortgage broker or RE agent.  

After 16 years in my career (RE broker) and 13 years as an investor, I'm at the equity growth stage as well. 

Find a good DSCR Broker that works with a variety of lenders so they can tailor your scenario to the right lender. 

Brokers.

Reaching out to multiple brokers in the area and building relationships with them will probably be the most important piece.