There are quite a number of things that can make utilizing an FHA loan more difficult such as more barriers during appraisal, appearance of low qualification/little cash, typically longer closing period, likely higher interest rate, and PMI cannot be dropped without a refinance if 3.5% down.That said, just chain 5% down conventional loans, and make sure your duplexes pay for themselves.  

That could be achieved without spending an inordinate additional amount in cap ex; In fact all I have seen had these items in common1.

@Michael Beirne Lower priced markets such as Baltimore are very difficult to operate in utilizing entirely 3rd party support.

I am not saying it cannot be done but it might be difficult and is definitely more risky.

I understand that's vague and difficult because the paperwork isn't in front of you.

Because intrastate (single state) offerings must still comply with that state’s securities laws, and because with the internet its difficult for offerings of any size to be limited to investors residing in a single state, the exemption for private placements is the exemption from registration most often used. 

The bigger point is that if you use Walmart, Lowes or some other big box paint the base colors can and do change which will make touch-up difficult.

I hope you are staying safe in this difficult time. 

Credit (loans) become much more difficult to obtain and if available you pay a MUCH higher interest rate with a much higher down payment requirement2.

It’s been incredibly difficult to see this situation unfold, especially given how much work and sacrifice went into saving for these properties.