First, like any suburb, Miami suburbs are not walking friendly. I think Florida may lead the nation in pedestrian deaths. You'll be driving everywhere. Traffic is high along Dixie Hwy, especially Northbound in the AM and Southbound in PM. It's the major road along the west side.
Dadeland Mall area (Kendall Dr & US-1) -- Set of high-rises with many commuters (rail is nearby) to downtown Miami. Restaurants, the mall and its restaurants, and hotels ($100) nearby. A week and you'll experience all there is to experience.
Coral Gables area (Univ of Miami) -- It's a college area! Lots restaurant/bar/entertainment choices but the hotels are more expensive ($150). Semi-walking friendly depending on the hotel's location. Close to Miracle Mile and Calle Ocho with more choices. Closer to Downtown/Miami Beach.
Quail Heights -- Your work area: drive there, work, leave. The commercial area along Dixie Hwy is like any other in the US, perhaps functional but boring. But hey, maybe the Olive Garden and Buffalo Wild Wings at Southland Mall is unique [sarcasm].
If you want cheap lodging ($70),
Homestead/Florida City, and commute north. Go watch the drunks at Wal-Mart for entertainment.
Drop me a message if you want and have time to go shoot.