GMAT Strategy

I had these steps saved on a document from a thread from a few years ago. Do you guys think this is a good strategy? Ive read several different strategies on this website and feel I should stick to one instead of losing my focus and trying to do many. Here it is:

1) Buy the OG13 and four Manhattan GMAT books: Sentence Correction, Number Properties, Geometry, and Word Translations.
2) Work through those four MGMAT books carefully, taking notes on any content points that you don't already know cold (which will be a lot).
3) Search for a guide on absolute value and inequality problems and learn the techniques for attacking those questions. Or buy the Equations, Inequalities, & VICs Manhattan GMAT book.
4) Once you've learned all the content from Manhattan GMAT and those two minor math points, take the OG13 diagnostic exam, untimed.
5) Review any knowledge that the diagnostic exam showed that you didn't know cold.
6) Take the first official GMATPrep computer adaptive exam under timed conditions to see where you stand speed-wise.
7) Time yourself doing OG questions to improve your speed.
8) Once you've worked through the entire OG, do all 6 of the Manhattan GMAT online CATs that come free with your book purchase.
9) Set an exam date once you are able to finish the entire Manhattan GMAT exams in the time period and are answering questions accurately.
10) About a week before the exam, start studying outlines for the AWA.


Keep in mind, I have not even opened the OG13 GMAT book yet so my first step would be to buy the MGMAT books and start working on those.

Any feedback is appreciated.

Thanks

Seems like a good place to start. Good luck!