Hi ducksuit,
Congrats on the 740! Regarding score improvement, I agree with bb; you should look to improve your quant score. Since you were able to score a Q49 with moderate studying, if you are able to put in some hard work, you probably can improve your score.
To score Q50 or Q51, your preparation is going to have to be more complete. Specifically, you have to go through GMAT quant carefully to find your exact weaknesses, fill gaps in your knowledge, and strengthen your skills. The overall process will be to learn all about how to answer question types with which you currently aren't very comfortable and do dozens of practice questions category by category, basically driving up your score point by point.
For example, if you find that you are not strong in answering Number Properties questions, then carefully review the conceptual underpinnings of how to answer Number Properties questions and practice by answering 50 or more questions just from Number Properties: LCM, GCF, units digit patterns, divisibility, remainders, etc. As you do such practice, do a thorough analysis of each question that you don't get right. If you got a remainder question wrong, ask yourself why you got it wrong. Did you make a careless mistake? Did you not properly apply the remainder formula? Was there a concept you did not understand in the question? By carefully analyzing your mistakes, you will be able to efficiently fix your weaknesses and in turn improve your GMAT quant skills. Number Properties is just one example; follow this process for all quant topics.
Each time you strengthen your understanding of a topic and your skill in answering questions of a particular type, you increase your odds of hitting your score goal. You know that there are types of questions that you are happy to see and types that you would rather not see, and types of questions that you take a long time to answer correctly. Learn to more effectively answer the types of questions that you would rather not see, and make them into your favorite types. Learn to correctly answer in two minutes or less questions that you currently take five minutes to answer. By finding, say, a dozen weaker quant areas and turning them into strong areas, you will make great progress toward hitting your quant score goal. If a dozen areas turn out not to be enough, strengthen some more areas.
To follow the path described above, you may need some new quant materials, so take a look at the GMAT Club reviews for the[url=https://gmatclub.com/reviews/highest-rated-gmat-courses/best-for-quant-4
]best quant courses[/url].
You also may find my article with more information regarding
how to score a 700+ on the GMAT helpful.
Feel free to reach out with any further questions.
Good luck!