Reviewing first prep test results

Hi guys

I just took the first prep test, following the advice of this forum recommending it as the first step. Results were as follows (with some comments of how I fared):
IR: 4, 37% - time management shock. I had to guess questions 9,10,11 without reading (all incorrect).
Quant: 42, 57% - I skipped questions that related to basic fundamentals such as circle area/ triangle questions etc. as I don't remember those.
Verbal: 37, 81% - I thought it was ok. Finished with 10 mins left. 5/8 mistakes relating to sentence correction questions.
Total: 650, 78%

I took the real GMAT in 2009 straight out of university. Results at the time and after 3-4 weeks of study were:
Q46, 77% / V34, 69% : Total: 650, 80%
I consider my English language skills to be significantly better today than in '09 and feel that with some time management and targeted SC practice I could improve both IR and Verbal score. Although Quant score could be improved, I don't think I will have much time to invest in order to bring my scores to a level better than '09.

As the interaction between the section scores is not clear to me (i.e. 37%, 57%, 81% = 78%), would an improvement in IR/Verbal , with some improvement in Quant (my 2009 level max) get me a 700 score? I am trying to assess if its realistic to hope for a 700 score with 3 weeks of full time study.

Thanks