GMAT Verbal & Essays

I'm only ~90 questions into the verbal book, but I think I'm doing reasonably well (10 wrong so far). Only thing is that I have no idea where that puts me.

I know that there are so many factors, particularly the adaptive nature of the exam, but in a vacuum, how does 80/90 on the book's first 90 questions look?

I just finished the first section (RC) of the OG Verbal book, scoring 95 out of 105.

Any idea whether this is an acceptable score if I'm trying to target 730?

Thanks in advance, and apologies--I know this is vague.

i would think so

The only way to find out your score is by taking a GMAT test. Accuracy is as important as timing. You can get 100% of the questions correct, but how long did it take you to answer them? In addition to that, you must take into account the fact that you will have mixed questions from each section: Sentence Correction, Reading Comprehension, and Critical Reasoning. To have an idea of what score you might get, take a GMAT Prep Exam.

I would characterize the OG as medium-high. There are some hard questions in there. But keep in mind that the OG was meant to give you a well-rounded example of what you need to know for the test, and that it does not look "forward" to changes.