Self-study
As someone who just took their first official LSAT in June, I feel confident that 7sage works wonders. I recommend that you volunteer to answer questions as much as possible. Doing this helped the classroom instructors narrow down what I was doing well, and help me define what I needed to improve upon.
The more I showed up to classes, the more the instructors had time to help my specific issues. While the instructors did a great job working with all the students, there is value in being a repeat and active volunteer. As I grew in the courses and classes, I started asking specific questions and getting more specific feedback. Some of the advice I received was absolutely valuable to improving my overall score.
I recommend even if you are feeling hopeless and that the LSAT is a monster, that you volunteer in classes. Do your best to treat it like a part-time job and show up often and on-time. Experiment with each tutor and try out each of their individual approaches. Finally, don't skip over the courses that are Review or Study Plan focused, these specific courses usually had lower classroom attendance, and had more time to give very specific answers to my questions.
I would not have felt nearly as prepared for this test without 7sage. For anyone on the fence, go all in. It's worth it.
I would point out that the answer to this question also depends on what your primary issues are. Do you have trouble maintaining endurance? Do you have trouble with skipping and flagging strategies? Do you change your approach under time? When you hit multiple hard questions, do you lose moral?
I personally believe that adding in PT's every few weeks or less, can be beneficial if those are your issues. For me, I have to work on maintaining focus and endurance, so longer Drills and PT's are helpful for me. For others, they actually need to relearn how to read with no time. With LG's, I am really bad at them. So doing a bunch of timed LG's would not be as helpful as actually practicing LG's with no time.
However, increasing my RC was mostly about solving timing issues. I learned this best by putting myself in a PT and operating under that time and endurance constraint.
My goal score is also not 180 or even high 170s. So the entire strategy depends on overall time to your actual test, and what your goal score is.