I created a new checking account with the credit union that gave me the loan, is it sufficient to just fund and charge everything from that account? 

You'd hypothetically have to have sufficient income for both mortgages, while still having low enough income to use a UDSA loan.

When you are purchasing a 3-4 unit with the FHA loan, it would have to pass the self-sufficiency test.

But, another aspect mentioned, using an LLC which has not been sufficiently funded for its purpose can cause you problems.

Definitely easier to pass the FHA "self sufficiency test" when looking at 4 units. 

The plan needs to have sufficient capital to purchase and operate a property (including potentially with non-recourse financing), and all income from the investment is returned to the plan in a tax-sheltered manner.

The vast majority of items can be managed from afar with a decent service provider.

When you say prescreen, what all is sufficient in your opinion?

Plus, this is sufficiently different than my other endeavors.

So the possibilities with real estate as an agent are truly vast!