That book looks pretty toasty and flaky and not very supple to me. I wouldn’t be surprised it the cover would split completely if opened it too far. Plus, it has a sub crease? That’s pretty much an automatic 4.0-5.0. IIRC, Overstreet won’t go above a 4.0 on a sub crease; in general CGC won’t go past 5.0, though I may have seen a few exceptions on the boards.
You don’t have to pay for grader notes if you submitted the book:
https://www.cgccomics.com/grading/cgc-grader-notes.aspx
Finally, you may want to try the Hey Buddy, Can You Spare a Grade? Forum for other folks opinions before sending books in until you develop a better feel for CGC grading.
https://www.cgccomics.com/boards/forum/42-hey-buddy-can-you-spare-a-grade/
Welcome to the Boards!