I'd check out Powerscore's LG bible. Kaplan was awesome for everything else (I ended up missing only 2-3 overall in LR and 1-2 in RC) but for some reason their LG strategy never clicked. Powerscore's did. Not plugging the company or anything, just saying it worked. I think a lot has to do with the fact that LG bible has games,games, and nothing but games. Helped me focus. Kaplan's Mastering book, IMO, had too few to practice with. Of course, you may also be able to accomplish the same thing by flipping through the Kaplan book and doing all the games. Up to you.
Hope this helps.