I was scoring at 158 for a little while and suddenly made massive jumps up to nearly 170. I'm sure you can do it, just focus on where you need to improve and absolutely master the LG section.
You seriously are in the same situation as me! I started off at a 146 then jumped to a 158 and have been scoring in that area constantly. My goal is also 163-165 by the December exam. It's comforting to know someone is on the same boat I am!
@CFloyd1221 shouldn't be a surprise that someone is striving to do the absolute best they can possibly do... remember, the $ difference from a 171 to even just a 174 is huge, let alone 175+