I would advise to keep high school activities out of your resume, if possible. You could note any volunteer experience, certifications or awards in place of post college activities, as an example.

Hey!

When are you taking your test? If time allows, I would really try to focus on accuracy over timing at first. Once you feel like you are getting questions right consistently, then work on timing. This might mean you take one PT test a week (i usually did one either saturday or sunday after using the weekdays to do drill sets). I can't quite narrow down how many tests I took for it to feel more natural, moreso just drill drill drill these question types until i felt more confident in myself. With this platform, I've drilled well over 5k questions and still feel like I fall short sometimes on certain question types.

If time allows it in your case, I suggest working on drills over and over again. On my diagnostic, i scored a 149. I take the October LSAT in two days, my best PT was 163, but I am consistently scoring in the high 150s-low 160s. My target is between a 157-160.

I struggle with second guessing myself too often especially in questions like this

I would say the more you practice these drills and the more problems you work on, the spectrum will become a more mental process that you can do quicker in your head. If you really do need to draw it out, you can always flag the problem on the LSAT and come back to it given you have time left in the section after working on other problems. I always try to work out the easier problems first that I know take me less time then spending 5-6 minutes on a harder question and possibly giving myself not enough time to finish the section. You don't get penalized for wrong answers on the LSAT.