We are most active in Manhattan midtown area with several school and private projects on going.

Also there is Atlanta specific BP not very active but its there .https://www.biggerpockets.com/forums/647-atlanta-r...

I am in the market to buy a 4-plex so finding a manager who also actively sells properties would be a plus.

I recommend you continue to be active in the forums because you'll get a lot of value from the conversations that happen. 

My husband and I are also investors with a rental portfolio and active with fix/flip properties in the Houston area. 

They truly have helped me go from couch to actively investing.Good Luck

There will also have to be seasonal maintenance activities such as cleaning of the gutters, emptying water out of the sprinkler systems, etc. to eliminate some of the weather related issues. 

Welcome to BP @Frank Closer You'll find a lot of active members here on BP from the greater DC area.DC is very tenant friendly you may want to buy nearby but outside of the city.

I love the activity!

Non US citizens have meager institutional options when seeking to finance investment real estate here in the US.Which leads me to wonder why more foreign investors don't actively seek out (or seek to create) deals financed by the seller.