This question gets asked very, very frequently on the forums - run a search and you'll find ample material advocating both approaches.The bottom line is that with your first investment property it really doesn't matter either way.

When you've got tenants in a property that wasn't built for multiple units, you'll generally have many more problems with noise transfer, causing you to have more frequent turns.  

@Charlie MacPherson   I see these $5,000 fees attached to short sale listings more and more frequently.

Its well worth it,  and they also offer frequent training,   attorney-reviewed rental forms that are correct and legal for seattle, etc.,  as well as organized and effective local advocacy.   

I see cash sales frequently for MLS listed properties.

I lived in Johns Creek for 20yr of my life until I moved away for the military 6 years ago, but I visit frequently.

As a buyer, most deals presented to me from a wholesaler either have the value of the property over inflated, the costs of the rehab under estimated, or frequently both.   

I'm new myself but a few investors I know locally seem to use Bay State Savings frequently. 

I have had somewhat frequent turnovers. 

The other form of house hacking that is frequently discussed is the "live in flip".