Cheers Bhai
You got a score of 710 despite the rigorous job pressure!!! Kudos to you for that...
If you plan to improve on that score, I'd suggest you set your target at +760
Your quant score is already very impressive! So don't worry about that... But make sure that you don't loose touch with the subject. Practice a few quant problems everyday to keep your math skills at its peak.
To get a 760 score, you need to score 50 in Quant and 42 in verbal
Improving the verbal skill is the main challenge here. You have to go from 36 to 42 - that's a 6 point increase. So try and build a study plan that revolves around strengthening the verbal part
I would advice you to take the test within 2 months

If you delay it more than that, the quant skills may drop