... , they're not worth it. Group study calls from 7sage are ... you really study hard on logicalgroup indicators, diagramming LR questions, reviewing ...
So it looks like you have some good advice on here. What I will add is that there are two quizzes in the CC that can really help with identifying question stems, as well as flashcards. I like to make my own flashcards, actually.
get flashcards of the logic indicators and review them briefly every night before bed (takes 5 minutes). you should know the 4 groups like the back of your hand