Help with Subject tests for November!

<p>Hi! I took the SAT USH June 2 and got a 740. Not bad considering the week I took it in was really hectic with my finals and a state competition :) I also took chemistry just to see how I did it since chemistry was the last subject I studied for my finals. I finished about half the questions and guessed on half the questions I answered and got a 640. I'm thinking of taking chemistry again if I can get a 740+ if I studied during this summer. What do you think? (I am kinda weak in chemistry. Good student with A's but I got one B in chemistry first semester)</p>

<p>Also, what goes on with the curves in SAT subject test? I'm stuck between taking the tests either October or November because I also have to take the SAT reasoning test. Is there a bigger curve on one month or does it matter?</p>

<p>Finally, with USH done, I'm thinking of also taking SAT MATH II (pretty good at math ;), World History, and English Lit subject test (if I'm not taking the chemistry). I know 2 is the requirement but I want to be as competitive as possible (I also need some motive to study for my classes and stuff). SAT Math II is not as hard as it once was (meaning more students are getting higher scores than in the past) so my question is, is it worth it? Also i'm going to be a senior this year and I took World History freshman year. Do colleges care if I took World History test as a senior plus regarding, from what I read, it is such an easy test? </p>

<p>Sorry if my language doesn't make much sense. :(</p>