You may want to just remove the SNS code then if you're not gonna use it, for tidiness sake. I can totally feel ya on the barcode. They are sort of a PITA to deal with, especially if you're trying to match them to a color scheme in a template. I have a handful of barcode fonts, but none are ISBN, which I can't find for free

For my genesis barcodes I have a little process that I have to go through every time to make them blend in like they do.
Select barcode, copy and paste, drag the color swatch over from illustrator, add it as a screen layer, adjust levels and saturation once barcode image, invert, merge screened layer, trim the excess, copy and paste into Illustrator. Sort of tedious, but I guess it's worth it.