Study Plan Advice

Hi all, I am planning to take the August LSAT this summer. I already took the test and scored a 167, and am hoping for low to mid 170s. I have previously PTd 174 and usually average a 172, but I haven't studied for the test in around 6 months. What kind of study work should I be doing to make my time most effective? Should I redo the curriculum, or just focus on drilling individual weaknesses and taking PTs? I have no commitments this summer so I am planning to study around 40-50 hours a week.