Hi irazer,
Many GMATers spend 3 months (or more) of consistent study time before they hit their 'peak' scores, so if you have been studying for just 6 weeks, you should not expect to have mastered any of the concepts (or your overall pacing) just yet.
Going forward, you have to be careful about confusing "quantity" of study with "quality" of study. I've never asked anyone to study 30+ hours a week - and while it's great that you might have the available time to study that much, with that number of study hours, you would run the risk of 'burning out' before Test Day (and that is something that we want to avoid). If you are going to try to study that much, then I suggest that you take one hour "off" for every two hours of study. For example, you could study for 2 hours, then stop for an hour, then study for another 2 hours, then take an hour off, etc.
To score at a high level on the GMAT, you have to have a variety of skills (more than just content knowledge) and the only way to properly assess whether you have those skills or not is to take FULL-LENGTH CATs under realistic conditions AND at regular intervals. That initial Diagnostic CAT Test will help to define some the 'weak spots' that you might need to work on - including pacing, endurance, focus, note-taking, stress, ability to 'let go' of a question, etc. Right now, we have no measure of your skill level in those areas and it's better to know about those issues earlier on (so that you can spend more time 'fixing' them) then discovering them too late in the process.
As such, it would be a good idea to take a FULL-LENGTH practice CAT Test; you can take 2 for free at
www.mba.com (and they come with some additional practice materials). That score will give us a good sense of your current strengths and weaknesses and will help provide a basis for comparison as you continue to study. A FULL CAT takes about 3.5 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have that Score, you should report back here (or you can feel free to PM me directly) and we can come up with a study plan.
GMAT assassins aren't born, they're made,
Rich