... really just a suggestion from my own experience about passing those #*&^#* exams.
Flash cards. Best advice I can give, is make as many flash cards (by hand) as humanly possible. Spend all your time taking any information that looks like it might get turned into a question on the CPSE (or EPPP, or whatever your exam is) and make it into a flashcard, and just keep making them. By the time I was done studying for the EPPP I had a stack of flashcards about a foot tall (literally), which I had produced over about 3 months of studying. I passed easily on the first try.
When it came time for the CPSE (which at the time was actually the California Jurisprudence exam), I tried to do less flashcards, ended up with maybe just a few inches worth and maybe just about 1-2 months of solid study time, and I failed the first time. I went ahead an redoubled my efforts, produced a full foot of flashcards again, and then passed.
There's really no magic to studying for these stupid multiple choice exams. It's just brute repetition. I used AATBS, but there's no magic to their materials - as long as you have some way of knowing the content covered on the exams and a few practice tests and sourcebooks available that can be turned into flashcards (or more practice tests, whatever), you can study for these exams. It just takes lots and lots of time - you have to really commit this stuff to rote memory.
Here's a link to a nice site that contains some free study materials for the EPPP and CPSE, among other things (no guarantee of quality or whether the material is up-to-date though):
www.flashcardexchange.com