"Window" and retaking exams
I've got 3 weeks to study ...
If I flunk the test, how soon before the "window" is reopened for me to re-test?
In my opinion, anyone taking the 7 should be prepared to take and pass the test at a minimum 1 or 2 weeks prior to their actual test date. This allows you time to review the material and get started implementing your business plan for after you pass the test.
I don't know your particular circumstances, but it sounds like you should delay taking the test. If you're being paid a training salary, while you study, your B/D probably won't allow you to delay the test without a rock, solid reason.
If it's 3 weeks or termination, then cram like there's no tomorrow. I would divide the study material into 14 different parts. Master each part, for 14 days. Then take a week to review and take as many practice tests as possible, as many times as possible.