I own a mix of property types from Baker to Gonzales.
As far as picking apart your planning assumptions to make sure you're not missing anything.
-Are all the utilities are metered to the individual units?
-You will tend to have higher turnover with the multi-families. Even if you can get them filled quickly and pull from the deposit to cover some of the expenses that go along with getting the unit ready for the next tenant, property management companies will normally pull a larger chunk of first month rent for a new lease.
Like others said, if you're good with those returns, go for it. The tricky thing in that area is you can't increase rents too much by making the units nicer because there's too many better areas in EBR people can live once you start getting into the higher rent ranges. So, more important that you don't underestimate on the expenses. I don't own any MF in that area, just one SFH with a section 8 tenant that has been a great deal.