..and scored 630 (36 in quant

and 39 in verbal with a 42 and 87 percentile respectively). I still have sometime to go before I take the GMAT (scheduled it for mid Sep) and I really want to cross 700. I know I need to work extra hard in quantitative section, wanted to check with you guys and see if anyone has any advice for me on how I should make the best use of the 10 weeks I have. I can devote about 30 hours a week quite easily and can bump it up if I need to. What has been the trend like after you take the diagnostic test? Is crossing 700 achievable if you have scored 630 in it? Any advice would be much appreciated. Thanks