Those are the books you'll need, however there are other resources that are highly recommended. You could try the Culhanes manual which is more concise than the FGU and a good reference guide. For practise exams, I highly recommend
www.aerotraining.com
If you go to aerotraining, click on the Test Yourself button on the top left corner, join the site (free, and no spam), and do the exams. This was the best help I got when doing my CPL exam.
Good luck!