Still looking for advice on the timing or sequence of the Mac, bleach/redye, Zydot treatment regimen to follow.

What I do know is that the day of the test I will use the Zydot Ultra Clean system.

Unanswered questions remain:

1) Is it better to wait until closer to the test date to do bleach/redye?
2) Using the Mac method, does one need to watch the timing of when before/after the bleach/redye a Mac is done so as to not counteract/lessen the effect of the bleach/redye?

Answers and expert opinions being sought.... thanks