LOL. Perhaps you want to differentiate yourself as a math-weak Asian?
Yes, you are much better off investing your time into the Applications (essays, and working with your recommenders, resume, etc) than trying to inch your score from 47 to 50.
Even your current score could be good enough, though a 700+ always looks nicer on paper.
The key will be cracking the applications and I hope you can survive the pressure of trying to fit them all in a pretty short amount of time you have left. It will be pretty difficult to try to fit in that many schools. Most do not recommend applying to more than 1 school a month and everyone says how much it wipes them out to write the applications....
I think what I am trying to say is, the GMAT is the easy part at this point.