Except that you will include all the DAZStudio files installed on your HD.  Not a practical solution if you do not intend to install DAZStudio at all.  A waste of disk space. 

The options are in your installer; you need to create your folder at a convenient location for easy access. 

But, I think before you proceed with this installation, what OS are you using and how is PP2012 installed on your machine?  Did you use default settings, where is your primary runtime located, etc?  As much practical information you can give.  ATM, we are giving advice without important information which you neglected to provide.  We can guide you better with this info and avoid headaches later when you attempt use the app.