As a general rule, what you're scoring about 10 days before is about what you should expect to score on the real test. I know that isn't what you want to hear - but I do want to let you know the general experience.
In addition, the jump from 710 to 750 is enormous. It's *much* harder than jumping from 610 to 650 - it's the equivalent of jumping from maybe 600 to 680 or 700, with the added caveat that, by definition, the vast majority of test-takers will never reach the 750 (or higher) level, no matter how much / how long they study. I know people who wanted to teach for us who took several
months to get the last 10 points (750 to 760), and some never made it.
That's not to say that you shouldn't go for it - but you should think about this decision: if it doesn't happen for you in that timeframe, would you rather postpone and go for the 750 at a later date? Or would you rather lower your goal score and keep your current test date?
Did you take these practice tests under 100% official conditions, including essay, IR, length of breaks, etc? Nothing to eat and drink during the test, etc? Literally everything just like the real test. That's always important, but it's especially so when you're going for an incredibly high score - you can't have any little thing costing you any points at all.
If you deviated from official conditions in any significant way (eg, skipped essay or IR or both, gave yourself longer breaks than allowed, used the pause button, etc), then your practice score are likely inflated, which means you aren't actually at a 710 level yet, so it's even less likely that you'll get to 750 in 2 weeks.
Okay, on to your results. Verbal is pretty much maxed out - it's 99th percentile already - so your improvement from this point on is going to need to come from quant. At the same time, you're going to need to keep up your verbal skills because you don't want them to slip.
In order to give you more specific advice, I need more detailed data on your strengths and weaknesses. Use the below to analyze your most recent MGMAT CAT(s):
http://www.manhattangmat.com/blog/index ... ice-tests/Then come back here and tell us the results of your analysis. (Note: do share an analysis with us, not just the raw data. 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!)