Automation for OCRing PDFs

I've scanned a bunch of magazines into PDFs, now I want to OCR them with PDF Pen Pro.
The problem I see is that I've scanned two pages at a time, instead of doing each page by itself.

Is there any way I can automate separating the two page scans, into single pages?

Is there a way to automate OCRin the PDFS with PDF Pen Pro?
I saw a script from David & Katy (Mac Power Users), which I think used Automator, but it requires some assumed knowledge, which I couldn't figure out, and wasn't able to to get working.

I can write a Python script to iterate through the PDF, I just don't know how to select each half of a two page scan, and extract it.

I'm hoping one of the gugus here can point me in the right direction.