Loading rfa and accessing family instance

Hi all,

I'm using UIApplication.ActiveUIDocument.Document.LoadFamily to load an *.rfa file into a project and I'm wondering if there is a better way to access the FamilyInstance and FamilySymbol of the loaded Family rather than using a FamilyInstanceFilter and FilteredElementCollector and using a foreach to access these every time a new *.rfa file is loaded?

I know what I'm doing is inefficient, but I can't think of another way.

Cheers,

Adam