the cpne is the clinical component. there is an FCCA that's some sort of nursing care plan test that comes in the mail. of course they only send it at certain times, so I'm sitting here waiting on them to get around to sending it. very annoying when you work your tail off to get the classes done and then they make you wait. anyway, that's nice that you really only have two classes to do. sg101 can be found here: Study Guides
You'll find one for all the nursing classes. I would definitely recommend it for transitions, but it was lacking for LS3. You can buy it online and download it instantly. It basically has one main study file (~60 pages) and lots of practice tests and other related information. The excelsior practice tests can be bought from excelsior through your excelsior login. they are $75. I saw almost every single question in the practice exams (your $75 gets you 2 100 question practice exams) in the sg101 practice tests, so I wouldn't recommend buying the practice exam for LS3. However, since you've never taken an excelsior test, it may help you to see how they write the questions and be more comfortable in the exam. Also, do you have the Content Guide? There are sample questions at the end of it which also help you see what they are looking for, not to mention a specific outline of everything that could be on the exam. It also includes the textbooks (names, isbn numbers, etc) where the exams are taken from. so if you would feel better, or already have those books, you can study that way.