Hi Mark.
If you play this right, within a month you should be able to get both your quant score and your verbal score to go up 3 points or more. As a matter of fact, just recently someone came to me wanting to go from Q44 to Q47 in a week and we were able to accomplish that.
How? By finding around a half dozen things he could have been doing better and working on those things.
You used the word "studying". I tend to prefer the words "prepare" or "train", because while one does need to understand certain concepts in order to handle GMAT questions, the GMAT is basically a game, as opposed to a test of knowledge. So the way to get a higher score is to learn to play the game more effectively.
With that in mind, the best way for you to get to that 700+ score - I think that you should shoot for at least 720 given how much time you have and where you are now - is to figure out what areas of your game are weakest and strengthen them.
Put it this way. I bet there are types of quant questions that you don't even like seeing, much less answering. Imagine if you were to spend a few days each focusing on six or seven types of quant questions that currently you find challenging and that are likely to show up when you take the test in a month. Imagine if you went from not really wanting to see those types of questions to hoping that you do. Your quant score would likely go up 3 to 7 points just from doing that. Combine that with improving your processes, so that you make fewer of the types of little errors that cost you either time or right answers, and you are almost guaranteed to score between Q47 and Q51 in a month. Even Q47 would take you to 700 or higher, and that would pretty much be in the bag if you were to do what I just described.
Here's a post you could read in order to get some ideas.
https://magoosh.com/gmat/2013/careless-m ... gmat-math/
You could go to the GMAT area here,
https://bellcurves.com, and sign up for a practice account to access a question bank that includes thousands of quant questions categorized into dozens of categories. You could spend a few days on each of several categories, researching how to handle questions in a each and doing dozens of questions in that category, and watch yourself become a total expert in handling questions of each type.
Now, you wanted to focus on verbal. You could grab another 3 to 6 section points in verbal without too much trouble. That would take getting just one or two more questions of each verbal type right. Hmm, let's say 3 to 6 points in quant and 3 to 6 in verbal. So we are talking about a total score increase of approximately 50 to 100 points. That would work. Are you motivated yet?
I am not sure what exactly it will take to get your verbal score to go higher, but you need to find a good source of verbal questions, possible GMAC's Question Pack, or the Veritas Question Bank, in which the RC questions in particular are great for practicing with, and figure out what about your processes needs to be better in order for your hit rate to increase. Rocking GMAT verbal is about having tight processes, and the reasons people don't get right answers include doing things like prethinking CR answers and then sticking to the prethought idea even when it's leading them to the wrong answer choice, ignoring key details, not using answer choices for their hacking value, and not being careful to make sure that RC answer choices actually match what is said in the passages.
So to generate a higher verbal hit rate, likely you have to slow down and figure out what about your processes could be improved. In other words, if you were to do tight, well constructed official verbal questions, such as you would find, for the most part, in the Question Pack, and if you were to spend five, ten minutes on each, would you get 95 to 100% of them right? If not, figure out why not, and improve your processes accordingly. Obviously, for SC, you might have also to brush up on some key concepts if you are consistently missing SC questions that involve certain rules or conventions.
You might get some additional insight from this post.
https://infinitemindprep.com/on-the-gmat ... ogic-rule/
Also, keep taking practice tests. If you run out of GMAT Prep tests, you would probably be ok retaking once, NOT twice, though even retaking once is not the greatest, and you could also get some good practice by using tests from Manhattan Prep and Veritas. Even just taking practice tests and seeing how high you can get your scores to go by being careful, intense and determined, can be a good way to increase your score. Intensity and sheer determination to get right answers and score high can make a big difference.
Then the practice test results can be used as information on what you could do next to improve your game and score even higher next time. How fun!
You could use this chart to get a sense of how section scores add up to total scores.
https://magoosh.com/gmat/2013/how-to-cal ... at-scores/
Here's a little more on my philosophy of how to increase one's GMAT score.
https://infinitemindprep.com/raising-you ... the-board/
Make it happen!!