Is this possible? Obviously, I have to cut out the drywall to accommodate the new box. Currently this is the set-up: 
Ultimately, I need this outlet to contain: 2 light switches and 2 120V receptacles:
Switch Plate Config. (I was unable to find a pic for the outlet, could only find switch plate pic).
The breaker for the existing switch is 15 amps. Also on the same breaker, a duplex 120V receptacle.
Best Answer
This is a single gang 2 switch unit. By removing the single gang box and installing a double gang box (old work box would be the easiest to install). You could use the same switches and add a duplex receptacle. A standard double gang outlet cover will finish it.