The first ten chapters are now bundled together into one pdf for the first time, including the solutions to odd-numbered exercises. The biggest improvement is that the pages are numbered from 1 to 309.
Thought I'd document the process for future reference. Here are the steps:
Procedure for creating one pdf for 92.321
1. Run Workflow "Build_OnePDF_321" using Automator. This pulls out the files in the right order and saves the combined files into a single pdf.
2. Open the resulting pdf in PDFpen
3. Run an Applescript I call "Number_Pages_KL_odd_even" that numbers the pages alternately on the bottom right and left.
4. Annotate front page with semester-specific information.
That's it. With the software executing the workflows, producing the final pdf takes only a few minutes, most of it in step 4.