I might take Hartline ahead of him this year, and you could also add McElroy and Garcia as an argument for sure. McElroy and Hartline put up at least as good of numbers, if not better. Garcia has a couple more INTs, but his numbers overall are as good or better as well.
Murray has a ton of potential, but he's a freshman. He will most likely end up being a better QB than a lot of those guys, but this year I don't believe he's there just yet.
AJ Green coming back has helped him a good bit in recent weeks.