I took both exams today and passed! Got an 868 on 603, and 750 on the 601. I was extremely nervous going into the test, but feel so much better now that I've passed.
CBT Nuggets videos helped tremendously in teaching me the material. The Exam Cram from Charles Brooks supplied me with the practices tests I needed in order to understand what the test would look like. I spent 2 weeks between both sources and it was apparently good enough