Batch Print - Override Printer selection software

Hello
Can anyone recommend a Batch Print software product to solve the following problem with AutoCAD Batch printing ? I
have a problem regarding Batch Plotting of dwgs created on AutoCAD 2013. I need
to batch plot lots of similar dwgs at A4. These drawings are all set up for a
particuar printer – Is there any way we can force the Batch Plot software to
override the `Plotter named in page setup’ set up in each individual drawing
and simply Plot to the required printer with settings for all the dwgs to plot
in the batch. Basically I do not want to go into each individual drawing
(100’s) and specify the printer + settings required, I need to do this once as
an override default for all ! Can you help please ? Alternatively, I have a pdf
of each Cad file which when opened in Adobe Reader and then plotted out, only
shows any dwg text very faintly. This due to the Acad font selected or CAD to
PDF conversion process. Can you recommend a solution to the printer settings
for the whole of the PDF print to attain a darker setting to enhance the
clarity of text , other than the obvious printer selection processes. Thanks
for your assistance