You are golden. When I was a rising junior, I scored a 580 on CR on the first practice test I took. With a TON of reading of newspapers like Wall Street Journal and NYT and by memorizing Direct Hits vocab, you can be on your way to a high 700!
Extremely helpful for vocab. I only got the words, but I'm pretty sure example sentences come with the words. Like, "opulent" may be a word. Sentence? Michelle Obama's parents must have been opulent because they sent her to Princeton.