Materials:
Kaplan - Read once
Ballast - Read a few times (SPD, Applicable parts of lighting in BS, PPP months ago)
SWPPP - Read once
Previously passed PPP. Lot's of overlap in the study materials.
Gave myself a very short amount of time. It's not complicated information so the faster you can spit it back at them without forgetting what you read the better.
I also read/skimmed some of the other sources listed... they may or may not have helped, but they were pretty much the same info as the study guides, just worded differently and in more detail. Totally skippable though.
My one misstep was looking at the vignettes one week before the test, as I usually do. These ones you really have to get to know, especially Site Design. I would say reviewing the solutions posted on this site over and over is mandatory.