Green book?

What’s your opinion on the Greenbook(Ivy Global’s Book)? I’m not willing to buy the official guide (Bluebook) because I saw many say that only the tests are good (as they are CB’s), so in your opinion guys should I buy the new green book(for the redesigned SAT)?
Info: I took a diagnostic test and got R+W = 640-680 and M 780-800. I would like a solid 700 R+W (Would a 1500/1600 be enough for Ivy League ?)

The first edition wasn’t particularly good. I’ve got the 2nd edition coming to me, but until I’ve spent some time with it, I can’t really say. Best of luck, @TryingHarder

Ok thank you, could you, please, say more about it after you experience with it ?