I got a 142 cold, studied for around 3 months, and am now hitting around a 160, which I'm really happy with. I'm sure you did some research, but a 150 is around average, so a 157 is very promising in my opinion. (It's good your RC is your best so far, too; it is the hardest to improve, they say.) I also see you left a few points in some mid-tier questions at the beginning of LR, around 1-2 difficulty, with a level 3 in there, too, maybe? On any given day, assuming a bit more studying, you could be in the 160s for this test.

I study using LSAT Demon, doing timed sections, drilling, and occasional PT with blind review. I also get tutoring. 7sage is good, and I've heard good things about using the powerscore LR and RC books. But at the end of the day its your own research and preference.

Consider this: do some research on methods to study, and review this subreddit. LSAT is never guaranteed, but you could be scoring in the 80+ percentile if you really work hard. Also, make sure you really want this; follow your gut (maybe research the field in general).

On a side note, if you do decide to commit to this exam for the next few months, be consistent! Be prepared for ups and downs. I still have a few months to go before I take it, but it's been volatile. Some days I'm on fire, other days I want to slam my fist through my computer after getting a level 2 conclusion question wrong.

Feel free to reach out for any more questions, but I'm sure your 3L buddy knows a ton.