I have not taken the pathology subject exam, but I have taken NBME exams, such as cardiology, hematology, immunology, etc. I prepare for them as if they are miniature step 1 exams, so I utilize the standard step1 resources, such as Goljan, First Aid, etc. Up to this point, the only qbank I have used is Kaplan because I haven't had time to work on USMLERx and I am saving UWorld for dedicated step 1 studying. So far, the Kaplan Qbank has not matched up very well with questions I have seen. It is much more in depth and requires more thought than the average question from the NBME. However, it is great preparation for the more difficult questions, and it can give you somewhat of a sense of where your weakness are. As for the Robbins question book, it is decent but not great. It focuses on material in the Robbin's text, which may not be very high yield for your exam. Nonetheless, if you have the time, you should do it because it will give you a sense of your weaknesses, but the question style doesn't match up all that well with those on the NBMEs.
I'm guessing that your school gives you a few days off to study. If you are pressed for time, I would hit FA first for the most high yield info, then Goljan for understanding of the high yield info as well as the few diseases that aren't covered by FA. If you have time, I think that the Kaplan Qbank or USMLERx would be most helpful, assuming that you want to save UWorld.
I hope that my writing isn't too disorganized, and you find this post helpful.
