What SAT vocabulary should I study now? + Timing problems?

Hi everyone!

I have studied the hot prospect and high frequency word lists from Barron’s. I now get 18/19 in the sentence completion questions, but many of my mistakes are due to a vocab deficieny. (specially the vocab in context questions - or sometimes the interpretation of the passage alone!)

I want to raise my sentence completion to a 19/19 and eliminate any chances of having mistakes due to new vocab. What lists should I study now?

I also have timing problems, is that normal? I used to take 15 extra minutes, but now 7. Also, without extra time, I score 600 and do not get the chance to think the right way. With extra time, I score 720-730 and I get to learn.

So is what I’m doing correct/okay? I want to ultimately score in the 750+ range.

Also does reading The Economist help boost my comprehension? Thank you!

Study Direct Hits and also word smarts