Hey @Cody Cook yes I just closed on a 4-plex a bit outside of OKC (mid-del).
I just found the deal oniline (either zillow or CL can't remember which at this point), ran the numbers and had an agent merely submit the offer.
As for management, I'm using RPM but am paying $100 more than I had anticipated. We had some issues early on but things are slowly getting more routine as we all settle into place.
Sorry I couldn't be more help than that, I purchased this place while living overseas so took a few more risks and peoples words than I wish I would have but that's how we learn =)
Good luck on your search and if you come across a good management company give me shout.