urgent:when NOT to take the math I, HELP

<p>im planning on taking it saturday, and took my first practice test and scored around 560, which i think is a bad reflection of how well i can do(late, brain shutting off, long day). With studying throughout the week/being rested i think i can score 650 easy, maybe higher with a bit of studying.</p>

<p>My top two choices are BC/Villanova (both of which use sat II’s for placement). is 650 not good enough (should i just not take it at all)? at what point should i consider not taking the test (score wise)?</p>

<p>by the way i got 660 on the math section on the SAT</p>