draz

I also used the Enhanced Stalla System for the June 2009 exam. I opted for the self-study approach. I would recommend starting early. I found that some of the study sessions needed less than a week to cover and some needed more. All in I planned to have the month left at the end for review, but that turned into 2 weeks instead.

This is the formula that worked for me:
1. Enhanced Stalla - self study
2. Read Schweser Secret Sauce - Don't read this until you've finished Stalla - It tends to shortcut things where Stalla drags them out, but for good reason. When you're first reviewing you want the longhand version to fully understand the underlying concepts, but in the end I would highly recommend the secret sauce. It simplified a couple of concepts and formulas for me.
3. Drill CFAi, BSAS, & Stalla Mock exams - at least 2 weeks out (CFAi & BSAS mocks were spot on close to the real test - the questions are worded a little different than you will be used to from Stalla so you should definitely do these mock exams even at the expense of the Stalla mock if you're short on time.

If you do stick with it and complete all of these the test will actually seem fairly easy to you. I thought the mock exams were harder than the real thing. I was finished with each session with about an hour to spare. I think this is what you want though because I hear that L2 is much harder so I would overprepare where possible with L1!

Good Luck - start reading!