Copywhiz supports command line parameters as below:
You would first save the project as .czml file and then run command line as below.
"C:\Program Files (x86)\Conceptworld\Copywhiz\ Copywhiz Copy.exe" /t /b /le "E:\My Documents\Copywhiz Projects\Test.czml"
/t - Run silently
/b - Run in background
/le - Show log on error
So, with this you should be able to run multiple commands inside a cmd file as per your requirements.
Apart from above, Copywhiz doesn't have any pre and post backup features.