Why not send it in with a prescreen?
BTW, I have seen graders at CGC treat ink smudges on very differently from each other. I had a book that had a slight smudge on the front cover, already graded 9.4, that I thought a press might be able to lift. Pressing lifted it a little (but not much) but the book looked beautiful so I sent it in to get graded. It came back a 9.0. I had it pressed again and sent in again, came back a 9.0. I sat on it for a few months, cracked it, thought (again) that it looked beautiful, sent it in with a prescreen, and it came back 9.8.