I am looking to increase the number of units per structure and therefore am looking for commercial real estate (targeting small apartment buildings w/ 5 - 10/units).  

Business is to be a bar/restaurant concept and will target younger educated professionals.

It seems for a new buy and hold investor looking to jump into the game with one's first purchase that single family homes are the asset class to target.

What is the max number of homes one should target in a market like Phoenix or Nashville.

I've done a ton of research in hopes of targeting a military serviceman/professional married with 2.5 kids, and I feel as if I covered everything.

I'd target regular people looking to buy and sell homes and market to them however I could.

Tampa at the Wal Mart and Target and all the Restaurants need is Affordable Housing.

If you want to categorize I'd say B class is rents from $1100-$1800/month in Phoenix - at least that'd be my definition, along with an area that doesn't look blighted (minimal/no graffiti, decent cars, etc).What price range would  you target (i.e. $140k-$225k)?

I normally target 75 cents on the dollar.However, I haven't used property management on my SFH's.  

Try to target B class neighborhoods that will get you some good appreciation.