Your plan sounds like a practical one! MGMAT guides
are the bedrock to the verbal section. And signing up for the test twice is a great contingency plan.
One omission I noticed is Official Prep material. MGMAT has great questions, but nothing compare to the Official Guide 12th
edition and the GMATPrep test, downloadable on mba.com.
I think a healthy interchange between problem sets/practice tests (official material) and concept review (MGMAT) practice question sets from the official material. You should focus on the areas in which you still struggle.
A good way to do so is by revisiting questions you missed. For example, if it’s a main idea question you missed – as you reference in your post – think about the reasoning you used. Why wasn’t that reasoning valid? What was the reasoning behind the correct answer.
For instance, in main idea questions you may be picking answer choices that are mostly right, but contain a word or two that is not supported by the passage. If you can identify such faulty reasoning, you will be able to improve quickly.
With main idea questions a helpful strategy is answering the question in your own words. A great source of such strategies and fundamentals – esp. if you are a video learner – is Magoosh
.com offers hundreds of practice lessons, which cover concepts on the GMAT, and hundreds of practice questions, from easy to super hard, covering these concepts.
Here’s a little sample:General CR Strategy
Let me know if you have any questions!
Magoosh Test Prep