Great job! Out of curiosity, why are you going for 740-750? No school requires a score that high. Or do you want something closer to the average for the top 5 schools (720-ish) and are giving yourself a little leeway in case you don't quite get to your goal?
Okay, we need to know what study materials you have.
We also need to know how you've been studying so far. In particular, read these two articles:
http://tinyurl.com/executivereasoninghttp://tinyurl.com/2ndlevelofgmatand tell us how what you've been doing does and doesn't match up with that and how you may need to change your approach accordingly.
Then, use the below to analyze your most recent MPrep CATs (this should take you a minimum of 1 hour):
http://tinyurl.com/analyzeyourcatsBased on all of that, figure out your strengths and weaknesses as well as any ideas you have for what you think you should do. Then come back here and tell us; we'll tell you whether we agree and advise you further. (Note: do share an analysis with us, not just the raw data. Your analysis should include a discussion of your buckets - you'll understand what that means when you read the last article. Part of getting better is developing your ability to analyze your results - figure out what they mean and what you think you should do about them!)
Finally, I just have to mention: 740/750 is a very high goal - one month is not very much time to lift to that level. It may seem like "only" 40-50 points, but it's not the same as moving from 650 to 700. The higher you go, the harder it gets to go even higher. I'm not saying it can't be done in 1 month, but I think the average would probably be longer (for those people who do actually end up getting to that level). Just FYI.