Not sure if you are actually on the right track, but it really does depend on what exactly you are looking for in terms of image enhancement and your working environment.
If you are running a printshop I am sure that Barts links would be a good bet to investigate further. I have no experience of this type of application.
From your questions and limited response as to what problems you forsee and what you need to fix it is not possible to give any answer other than a guess at what you may want.
Taking the Perfectly Clear Photoshop plug-in (rather than the print management application) you are presented with a dialogue window that echoes some of the features of ACR and in some cases a click to fix mixed with slider controls. On the face of it not offering much difference and certainly limiting fine control of images. Is the plug-in worth $130 only you can decide but the Lightroom application which may be even easier/quicker to use for batch processing than PS costs around $100
I think it is a shame that you have spent many hundreds of dollars on an application such as PS and are not using the tools to the fullest extent, yes it does take a little effort but should offer much better control.
My suggestion to you is to investigate corrections in PS via ACR and where appropriate applying batch conversions.
One method of using ACR for batch conversions http://www.digitalcameraworld.com/2013/02/26/batch-processing-how-to-edit-multiple-photos-in-adobe-camera-raw/
Should you really feel that plug-in offers greater benefit then I strongly suggest that you download each demo to find out exactly what is involved and if the product brings anything useful to the table