It would be great to know what your score was, what you have been scoring lately, and what your goals are. Overall your plan is solid. You may want to add some practice tests. Doing just a Quant section of a CAT (GMATClub, MGMAT, or GMATPrep) can really help boost your Quant score. The CATs will allow you to work on your timing which is critical on test day.
If you can, a Quant CAT every other day for the next two weeks would be great. The number of tests depends on your schedule. Do what is reasonable for you. For the week before the test it would be great to take at least one full GMAT Prep. The GMAT Focus tests are also great the week before because they are very close to the real exam but they are shorter so not as fatiguing.
Be aware that GMATClub Quant is more difficult than regular GMAT Quant so if you aren't already scoring in the mid-40's you may find it extremely challenging. There is still a whole bunch to learn in the GMATClub tests
even if your scores are depressingly low. You may do better with the MGMAT tests or you could try both. I find that MGMAT has very challenging word problems and that GMATClub has great number properties and combinations/permutations questions. The both get you thinking and force you to address content and timing weaknesses.
In general, load up on studying in the next two weeks but for the 5-7 days before your exam, cut back and just focus on maintaining your strengths. Try not to focus on any new material.
Also, whenever you do a CAT you may want to do some warm-up questions (5-7 questions) to get your brain moving.
I hope that this helps and let me know if you have any questions.
"It is a curious property of research activity that after the problem has been solved the solution seems obvious. This is true not only for those who have not previously been acquainted with the problem, but also for those who have worked over it for years." -Dr. Edwin Land
GMAT vs GRE Comparison
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IMPROVE YOUR READING COMPREHENSION with the ECONOMIST READING COMPREHENSION CHALLENGE:
Here is the first set along with some strategies for approaching this work: http://gmatclub.com/forum/the-economist-reading-comprehension-challenge-151479.html