AutoCAD Inventor :: Combined Styles Library Use

I am in the middle of an upgrade from 2009 to 2012 and have a styles use question. I am running three flavors of Inventor: Inventor, Inventor Professional, Inventor Factory (based on Pro). The styles library that I am starting with was migrated from 2009 to 2012 and was running both IV series and Pro Seats. Although no real Pro functionality was ever used so any associated styles were still as delivered for the most part. My working environment is a single Vault project setup where all the styles and libraries are local copies on each workstations drive. All the standard content (styles and libraries) stay checked out to myself on my machine for protection.

So here is what I did to make an all inclusive styles library that all flavors of products will use. pick this apart if you see something wrong with the method.

1) I started with the migrated styles library from 2009

2) As I installed the different flavors I copied the new styles libraries over the existing migrated one without allowing it to "overwrite" any existing styles files. This only populated the styles libraries with any thing I was missing from any of the flavors.

3) I use this combined library on all station regardless of the flavor installed. So some stations have styles on them that are not in use by the installed software.