And who better than to recruit a person who is already experienced at such, which there is a lot. 

Several options you can explore to get the down payment capital: Solo401k; HELOC on personal residence or from equity of the SFR; Cash Value Life Insurance Policy; Business Credit; Private Lenders, to name a few.

;however, my issue is that I dont have good credit and since im self employed I make.very little income. 

This person had never used credit.

The person who comes into money but not a lot of experience in real estate should be a little more cautious right now.So overall, I am not saying - do not buy, I am saying be careful.

I personally have had amazing success with properties which are between 2 and 12 units, which most people would call “small multi-family.”

Personally I like the Section 8 program when the property is located in a super poor area with a ton of blight and crime.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

To address this, the lease will clearly state that any credit will be returned at the end of the lease term.

You are still personally guaranteeing the loan.And you did the right thing by putting the assets into an entity, especially if there is equity.