Too high or too low?
Too high is my guess. If The Order is really a 7-8 hour game with a couple of those hours being cutscenes, it'll get dinged by reviewers enough to push it into the mid-to-low 70s.
I'm almost certainly buying it regardless, but not until after I've cleared out my backlog and finished Bloodborne. By that time it should be discounted enough that I'm not going to be worried about length or replayability.