I would definitely suggest the OG 11 AND the Quant and Verbal workbooks to go with it. You can get them cheap from Amazon or Half. Those contain actual questions from GMAT exams, not just similar-type questions.
As far as jumping right into B-school, it sounds like from your post that you just finished your undergrad, you may want to think twice. You will be in a setting with people who have been working in the professional fields for long periods of time. These are people with real world experience who know how to deal with change, confrontation, in all, they just have a lot more to bring to the table. What will you bring? You may know the textbook answer, but those of us with real-world experience know that textbook answers are not always the best alternative.
I'm not saying this to undermine you or judge your capabilities in any way, but you may be
THAT GUY in the program that everybody dreads having in their group because your lack of experience is really cheating your teammates out of a sharper mind. Not only that, but you are also cheating yourself and your own career in the long run. Coming strait out of your undergrad, you're in love with the
ideal of the MBA and the subsequent career options, but if you haven't even dabbled in your desired industry, you may be setting yourself up for a HUGE disappointment if it turns out that field was not really what you thought it would be.
Take your time and get some experience. That's why most MBA candidates are 28 yrs old. Two weeks of a crash course on GMAT prep and a decent score on the GMATwill not prepare you for a real MBA course.
Maybe even ask an admissions counselor why they suggest you get 2+ years of experience before entering the MBA program and ask some current students to get their feedback. Your GMAT is good for 5 years. Take your time, study hard (there are no shortcuts), and take the GMAT when you're ready. More importantly, go to B-School when you're
REALLY ready. B-school is worth the wait.
If I'm wrong in what I read into your schooling and you already have experience, I apologize.
But I think this is good advice for anyone looking to make the jump strait from their undergrad to an MBA.
Recruiters for post-MBA job placement will be looking at your experience in the workplace, not your GMAT score. Waiting will even allow you time to explore and research other programs that may give you a better shot at getting with your desired company.
Anyhoo, get those other books! They're really good!
Best of luck to you!