I would think about the necessary study time for both the CFA and the GMAT. It is typical to study 150 hours for the CFA and 100 hours for the GMAT.
In my opinion, I would focus on one or the other, not both at the same time.
The best way to organize a study plan is to first take a practice test. This will show you your strengths and weaknesses and you can organize a specific plan for your needs.
Best of luck.
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