I totally understand the fear of wasting time by reading a big book like that. However, I feel the biggest waste of your time is doing constant drills without out any change in your study habits or and change in your knowledge base. I LOVED the loophole, its got me from -12/10 to -2/3 with repetition of the translation drills, the CLIR, making sure I REALLY understood the structure of an argument, and breaking down the types of questions and their patterns. Once you have a really strong base I think drilling is extremely important so you can see patterns and narrow down your weaknesses, but your score won't budge unless you make sure your base is super strong.

Hope this helps!

TL;DR - read the loophole if you feel like it's bridging concept gaps you have with LR

Intersted!

Im Intersted!