Changing the test date...

<p>Hi everyone! I took the October SAT and did well on the CR (800) and verbal (700) but terribly on the math (490)....I'm not a math person and I'm not applying to Ivies or anything, my hardest are around the 50 percent admission rate. I was thinking about taking them again, and I'm signed up for a literature subject test on the November date. I called Collegeboard and asked them if I could switch it to the Reasoning test and they said that if I showed up early on the test date and the center had extra tests that would work out. I also have accommodations (keyboard and extra time)....
Has anyone done this before? Has it worked out? How early should I go, etc?</p>

<p>I think I could improve my math and I could surely improve my writing because I didn't have the keyboard accommodation last time (my fine motor skills are really crappy and it's pretty tedious for me to legibly handwrite things)</p>