Hi satosys,
With an August Test Date, you have plenty of time to continue studying. You didn't mention any of these points in your posts, so I'm curious about a couple of other things:
1) What is your goal score?
2) Have you taken any FULL CATs yet? If so, then what were your scores (including the Quant and Verbal Scaled Scores)?
The big issue that I see in your study plan is that you're taking an "all Quant, then all Verbal" approach. If you're having trouble with the Quant section, then what will happen to those skills while you're focused on Verbal for 1-2 months? You'll find it far more beneficial to 'mix' your studies a bit - some Quant and some Verbal each week.
I'll be happy to make some recommendations once I know your score goal and a recent CAT score. Without that information, I would only be able to give you general advice and not the specific advice that you're probably looking for.
GMAT assassins aren't born, they're made,
Rich