<p>Here is my recommendation:
A) Take as many practice tests as you can
B) Write down every problem you get wrong and determine whether a mistake was careless or conceptual
C) Write down every TYPE of problem you get wrong in an excel file and study these intensely</p>
<p>To get a 2400 you need a combination of intelligence and luck. One careless mistake in math and it is all over. Best of luck to you.</p>