All these domains are available and have more than 5K searches in the US with a CPC greater than $1.

Code:
atlantametropolitancollege.net
aquariumatlanta.org
atlantapetrescue.net
But then,

For Atlanta Metropolitan College.net, #1 is atlm.edu
For Aquarium Atlanta.org, #1 is georgiaaquarium.org
For Atlanta Pet Rescue, #1 is atlantapetrescue.org

I know it is NOT that easy to outrank those sites that are currently on #1 for those keywords but ASSUME that, I somehow manage to outrank these website... Do you see any potential in such keywords/domains then?

I am asking this because, the keywords all have an organization/institution behind it. So, would investing on domains for such keywords be a good idea?